Older GCN Circulars Archive

1. Circulars 21000-21999
2. Other Circulars

To learn more about the GCN Circulars and how to subscribe.

1) Listed in reverse serial number order -- newest first: 21000 - 21999:

• 21999 GRB 171010B: Fermi GBM detection
  
• 21998 IPN Triangulation of GRB 171011B (long/very bright)
  
• 21997 GRB 171010B: Swift ToO observations
  
• 21996 GRB 171011A: TAROT Calern observatory optical observations
  
• 21995 GRB 171010B: Swift detection of a burst
  
• 21994 GRB 171011A: MASTER-SAAO optical observations
  
• 21993 GRB 171011A: Swift detection of a burst
  
• 21992 GRB 171010A: Fermi GBM observation
  
• 21991 GRB 171010A: LCO 1m telescope observations
  
• 21990 GRB171010A: AstroSat CZTI detection
  
• 21989 GRB 171010A: Swift-XRT afterglow detection
  
• 21988 GRB 171010A: optical observations
  
• 21987 GRB 171010A: OT, spectrum, and possible host galaxy
  
• 21986 GRB 171010A: Swift ToO observations
  
• 21985 GRB 171010A: Fermi-LAT detection
  
• 21984 GRB 171007A: Swift/UVOT Upper Limits
  
• 21983 LIGO/Virgo G298048/GW170817: updated localization from parameter estimation
  
• 21982 LIGO/Virgo G298048: Mid-Infrared Spitzer/IRAC Observations at 3.6 and 4.5 microns
  
• 21981 GRB 171007A: Swift-BAT refined analysis
  
• 21980 GRB 171007A: Fermi GBM observation
  
• 21979 GRB 171007A: Enhanced Swift-XRT position
  
• 21978 GRB 171007A: Swift-XRT refined Analysis
  
• 21977 GRB 171007A: RATIR Optical and NIR Observations
  
• 21976 GRB 171007A: Swift detection of a burst
  
• 21975 LIGO/Virgo G298048: LWA radio observations
  
• 21974 GRB 171004A: Swift/UVOT Upper Limits
  
• 21973 GRB 171004A: Swift-BAT refined analysis
  
• 21972 GRB 171004A: Correction to RATIR Astrometry and Photometry
  
• 21971 GRB 171004A: Swift-XRT refined Analysis
  
• 21970 GRB 171004A: Enhanced Swift-XRT position
  
• 21969 LIGO/Virgo G299232: SWASP optical imaging coverage
  
• 21968 GRB 171004A: RATIR Optical and NIR Observations
  
• 21967 GRB 170710A: LCO Observations
  
• 21966 GRB 171004A: Swift detection of a burst
  
• 21965 GRB 171003A: Enhanced Swift-XRT position
  
• 21964 LIGO/Virgo G299232: MAGIC Cherenkov Telescopes observations
  
• 21963 Swift Trigger 775946 is a Galactic transient, not GRB 171003
  
• 21962 LIGO/Virgo G299232: LOFAR follow-up
  
• 21961 GRB 171003A: LT early optical observations
  
• 21960 GRB 171003A: Swift detection of a burst or a Galactic Transient
  
• 21959 GRB 171001A: RATIR Optical and NIR Observations
  
• 21958 GRB 171001A: Swift-BAT refined analysis
  
• 21957 GRB 171001A: Nanshan-0.36m optical afterglow detections
  
• 21956 GRB 171001A: Swift-XRT refined Analysis
  
• 21955 GRB 171001A: Swift/UVOT Detection
  
• 21954 GRB 171001A: IRSF Observation
  
• 21953 GRB 171001A: D50 optical limit
  
• 21952 GRB 171001A: Enhanced Swift-XRT position
  
• 21951 GRB 170921A: 15 GHz upper limits from AMI
  
• 21950 GRB 170903A: 15 GHz upper limits from AMI
  
• 21949 GRB 170906C: 15 GHz upper limits from AMI
  
• 21948 GRB 170823A: 15 GHz upper limits from AMI
  
• 21947 GRB 170822A: 15 GHz upper limits from AMI
  
• 21946 GRB 171001A: Swift detection of a burst
  
• 21945 LIGO/VIRGO G299232: AMI-LA Observations of the optical transient Swift J014008.5+343403.6
  
• 21944 Fermi Gamma-ray Burst Monitor trigger 528508320/170930994 is not a GRB
  
• 21943 Fermi Gamma-ray Burst Monitor trigger 528330888/170929011 is not a GRB
  
• 21942 3.6m Devasthal Optical Telescope observations of GRB 170428A
  
• 21941 Further Swift-XRT observations of IceCube 170922A
  
• 21940 LIGO/Virgo G298048: Record of all e-MERLIN results to date on SSS17a
  
• 21939 LIGO/Virgo G298048: Further European VLBI Network (EVN) observations of SSS17a
  
• 21938 LIGO/Virgo G299232/GW170825: serendipitous XMM-Newton slew observations
  
• 21937 LIGO/Virgo G298936/GW170823: serendipitous XMM-Newton slew observations
  
• 21936 Fermi-GBM GRB misclassifications
  
• 21935 LIGO/VIRGO G298048: VLA detection of the radio counterpart at 6 GHz
  
• 21934 LIGO/Virgo G297595/GW170814: updated localization from parameter estimation
  
• 21933 LIGO/VIRGO G298048: Further MeerKAT observations of SSS17a
  
• 21932 GRB 170728B: Kottamia R-band observation
  
• 21931 LIGO/Virgo G298048: Summary of Pi of the Sky observations
  
• 21930 IceCube-170922A: Swift-XRT observations
  
• 21929 LIGO/VIRGO G298048: Latest 3 GHz Detection of Radio Counterpart to SSS17a
  
• 21928 LIGO/Virgo G298048: Limits from further FRB searches of SSS17a
  
• 21927 LIGO/Virgo G298048: MWA Observations of Error Region
  
• 21926 Konus-Wind observation of GRB 170921B
  
• 21925 Correction to GCN Circular 21919: GRB 170921C: Insight-HXMT detection
  
• 21924 IceCube-170922A: HAWC follow-up
  
• 21923 Search for counterpart to IceCube-170922A with ANTARES
  
• 21922 GRB 170921B: AstroSat CZTI detection
  
• 21921 GRB 170906A: Insight-HXMT detection
  
• 21920 LIGO/Virgo G298048: Effelsberg 100-m Radio Telescope observations of SSS17a
  
• 21919 GRB 170921A: Insight-HXMT detection
  
• 21918 IPN Triangulation of GRB 170921B
  
• 21917 INTEGRAL SPI-ACS observation of AMON IceCube-170922A
  
• 21916 IceCube-170922A - IceCube observation of a high-energy neutrino candidate event
  
• 21915 GRB 170921A: RATIR Optical Afterglow Detection and NIR Observations
  
• 21914 LIGO/Virgo G298048: SRT observations of SSS17a in NGC 4993
  
• 21913 GRB 170921A: Swift/UVOT Upper Limits
  
• 21912 GRB 170921A: Swift-BAT refined analysis
  
• 21911 GRB 170918A: Insight-HXMT detection
  
• 21910 GRB 170921A: LCO 2m telescope observations
  
• 21909 GRB 170921A: NOT optical observations
  
• 21908 LIGO/Virgo G298048: LCO FLOYDS and Gemini Spectroscopy
  
• 21907 GRB 170921A: Nanshan optical upper limit
  
• 21906 GRB 170921A: Enhanced Swift-XRT position
  
• 21905 GRB 170921A: MITSuME Okayama upper limits
  
• 21904 GRB 170921A: Swift-XRT refined Analysis
  
• 21903 GRB 170921A: TAROT Calern observatory optical observations
  
• 21902 GRB 170921B: Fermi GBM detection
  
• 21901 GRB 170921A: Swift detection of a burst
  
• 21900 LIGO/Virgo G298048: ATCA monitoring of SSS17a in NGC 4993
  
• 21899 LIGO/Virgo G298048: Limits from an FRB search of SSS17a with the Parkes 64m Radio Telescope
  
• 21898 LIGO/Virgo G298048: SSS17a photometry of CHILESCOPE observatory
  
• 21897 LIGO/Virgo G298048: Milliarcsecond imaging of the NGC 4993 central radio source
  
• 21896 Swift trigger 773082 is probably not astrophysical
  
• 21895 LIGO/Virgo G298048: TOROS photometry of SSS17a
  
• 21894 LIGO/Virgo G298048: Desert Fireball Network simultaneous optical observations of the SSS17a/DLT17ck.
  
• 21893 Fermi-GBM GRB misclassifications
  
• 21892 GRB 170912C: Insight-HXMT detection
  
• 21891 LIGO/VIRGO G298048: MeerKAT observations of SSS17a
  
• 21890 LIGO/Virgo G297595: NIR Observations following GW170814
  
• 21889 LIGO/Virgo G298048: Danish Telescope Observations of SSS17a/DLT17ck
  
• 21888 LIGO/Virgo G297595: PIRATE observations
  
• 21887 Fermi GBM trigger 527149931/170915272 is not a GRB
  
• 21886 LIGO/Virgo G298048: ATLAS pre-discovery limits 601 to 16 days before first detection of SSS17a/DLT17ck
  
• 21885 LIGO/Virgo G297595: LSGT observation of nearby galaxies
  
• 21884 GRB 170906A CALET Gamma-Ray Burst Monitor detection
  
• 21883 LIGO/Virgo G298048: AST3-2 observations of SSS17a/DLT17ck from Antarctica
  
• 21882 LIGO/Virgo G298048: ATCA monitoring of SSS17a in NGC 4993
  
• 21881 GRB 170712B: Swift/UVOT Upper Limits
  
• 21880 Fermi GBM trigger 526978609/170913289 is not a GRB
  
• 21879 GRB 170912B: Swift-BAT refined analysis
  
• 21878 LIGO/Virgo G297595: DLT40 follow-up observation
  
• 21877 GRB 170912A: Swift-BAT refined analysis
  
• 21876 GRB 170912A: Swift-XRT refined Analysis
  
• 21875 LIGO/Virgo G299232: Khureltogot observations
  
• 21874 GRB 170912A: Swift/UVOT Upper-Limits
  
• 21873 GRB 170912B: Swift-XRT refined Analysis
  
• 21872 GRB 170912B: Fermi GBM observations
  
• 21871 LIGO/Virgo G298936: Konus-Wind observations
  
• 21870 LIGO/Virgo G299232: Konus-Wind observations
  
• 21869 GRB 170911A: Fermi GBM observation
  
• 21868 GRB 170912B: Enhanced Swift-XRT position
  
• 21867 LIGO/Virgo G299232: Pierre Auger Observatory follow-up
  
• 21865 LIGO/Virgo G298389: Pierre Auger Observatory neutrino follow-up
  
• 21864 GRB 170912B: Swift detection of a burst
  
• 21863 GRB 170912A: Enhanced Swift-XRT position
  
• 21862 GRB 170912A: Prompt enhanced Swift-XRT position
  
• 21861 GRB 170912A: Swift detection of a burst
  
• 21860 LIGO/Virgo G297595: Las Cumbres Observatory Optical Follow-Up
  
• 21859 Konus-Wind observation of GRB 170906A
  
• 21858 GRB 170911A: MAXI/GSC detection
  
• 21857 Konus-Wind observation of GRB 170906C
  
• 21856 GRB 170906A: AstroSat CZTI(Veto) detection
  
• 21855 GRB 170830B CALET Gamma-Ray Burst Monitor detection
  
• 21854 IBAS Alert nr. 7913 is not a real GRB
  
• 21853 Fermi-GBM GRB mis-classifications during current Solar activity
  
• 21852 Konus-Wind observation of GRB 170904A
  
• 21851 LIGO/Virgo G298048: VLA radio non-detection
  
• 21850 LIGO/Virgo G298048: VLBA upper limits at 8.7GHz for the GW counterpart SSS17a/DLT17ck on August 20-21 UT
  
• 21849 Swift Triggered on MAXI J1535-571
  
• 21848 LIGO/Virgo G298048: LWA Detection
  
• 21847 GRB 170906A: Swift/UVOT Detection
  
• 21846 GRB 170906B: Swift/UVOT Upper Limits
  
• 21845 GRB 170906B: Swift-XRT refined Analysis
  
• 21844 LIGO/Virgo G299232: Swift-XRT sources
  
• 21843 GRB 170906C: optical observations
  
• 21842 LIGO/Virgo G298048: ATCA observations of of SSS17a in NGC 4993
  
• 21841 GRB 170906B: Swift-BAT refined analysis
  
• 21840 GRB 170906B: Fermi GBM detection
  
• 21839 GRB 170906A: Fermi GBM detection
  
• 21838 GRB 170906A: Swift-BAT refined analysis
  
• 21837 GRB 170906C: COATLI Observations
  
• 21836 GRB 170906A: Swift-XRT refined Analysis
  
• 21835 GRB 170906C: Swift/UVOT Upper Limits
  
• 21834 GRB 170906C: Swift-XRT refined Analysis
  
• 21833 LIGO/Virgo G298048 GRAWITA: VST-ESO PARANAL follow up of SSS17a in NGC4993.
  
• 21832 GRB 170906C: Swift-BAT refined analysis
  
• 21831 GRB 170906C: Enhanced Swift-XRT position
  
• 21830 GRB 170906A: MASTER-OAFA (Argentina) early automatic OT detection
  
• 21829 GRB 170829A: Insight-HXMT detection
  
• 21828 GRB 170906C: Swift-XRT observations
  
• 21827 GRB 170906A: Fermi-LAT detection
  
• 21826 GRB 170906C: Swift detection of a burst
  
• 21825 GRB 170906A: REM optical/NIR observations
  
• 21824 GRB 170906A: Enhanced Swift-XRT position
  
• 21823 GRB 170906B: Enhanced Swift-XRT position
  
• 21822 GRB 170906B: Swift detection of a burst
  
• 21821 GRB 170906A: Swift detection of a burst with an optical afterglow
  
• 21820 IPN Triangulation of GRB 170904A (long/very bright)
  
• 21819 LIGO/Virgo G299232: Lulin Observations of Possible OTs
  
• 21818 GRB 170901B: Insight-HXMT detection
  
• 21817 GRB 170904A: Insight-HXMT detection
  
• 21816 LIGO/VIRGO G298048: Precise position of SSS17a based on HST and Gaia
  
• 21815 LIGO/VIRGO G298048: Radio detection of SSS17a at 6 GHz with the VLA
  
• 21814 LIGO/VIRGO G298048: Radio detection of SSS17a at 3GHz with the VLA/JAGWAR
  
• 21813 Duplicate submission removed.
  
• 21812 GRB 170903A: Fermi GBM observation
  
• 21811 LIGO/Virgo G299232: Maidanak observations of optical transient SwiftJ014008.5+343403.6
  
• 21810 LIGO/Virgo G298389: Fermi GBM Flux Upper Limits
  
• 21809 LIGO/Virgo G299232: LOFAR follow-up
  
• 21808 Swift Trigger on continued activity of MAXI J1535-571
  
• 21807 GRB 170827A: LCO Observations
  
• 21806 GRB 170903A: Swift/UVOT Upper Limits
  
• 21805 GRB 170903A: UAFO /ISON optical upper limit
  
• 21804 LIGO/Virgo G298048: e-MERLIN upper limits on 5 GHz compact emission from SSS17a
  
• 21803 LIGO/Virgo G298048: ATCA monitoring of SSS17a in NGC 4993
  
• 21802 LIGO/Virgo G299232: RoboPol observations of MASTER OT J033744.97+723159.0
  
• 21801 GRB 170903A: MITSuME Okayama upper limits
  
• 21800 GRB 170903A: Swift-XRT refined Analysis
  
• 21799 GRB 170903A: Host galaxy redshift from OSIRIS/GTC
  
• 21798 LIGO/Virgo G298048: Chandra X-ray Update on GW170817
  
• 21797 GRB 170903A: Enhanced Swift-XRT position
  
• 21796 GRB 170903A: Swift-BAT refined analysis
  
• 21795 GRB 170903A: Nanshan optical upper limit
  
• 21794 GRB 170903A: Swift-XRT observations
  
• 21793 GRB 170903A: Swift detection of a burst
  
• 21792 Swift Triggers on MAXI J1535-571
  
• 21791 Swift Trigger 770431 (GRB 170902A) is a not a GRB
  
• 21790 GRB 170902A: Enhanced Swift-XRT position
  
• 21789 LIGO/Virgo G297595: DECam observations of BBH merger region of interest
  
• 21788 GRB 170902A: Swift detection of a burst or possible Galactic transient
  
• 21787 LIGO/Virgo G298048: Chandra monitoring of the X-ray emission from SSS17a
  
• 21786 LIGO/Virgo G298048: Continued X-ray monitoring and X-ray detection of GW170817 [erratum]]
  
• 21785 LIGO/Virgo G298048: AGILE-GRID analysis of data contemporary to X-ray emission from SSS17a in NGC4993
  
• 21783 LIGO/Virgo G298048
  
• 21782 LIGO/Virgo G299232/PGWB170825.55: MASTER archive images of the SIWFT/UVOT and MASTER OT J033744.97+723159.0 in NGC1343 galaxy before 25
  
• 21781 LIGO/Virgo G298048: Hubble Space Telescope observations
  
• 21780 LIGO/Virgo G299232: XSNAOC spectral observation of MASTER OTJ033744.97+723159.0
  
• 21779 LIGO/Virgo G298048: Possible Plateau in Ks band revealed by continued Gemini-South observations
  
• 21778 LIGO/Virgo G298048: Continued Gemini South observations
  
• 21777 GRB 170831A: Fermi GBM detection
  
• 21776 GRB 170830A: Fermi GBM observation
  
• 21775 Konus-Wind observation of GRB 170827B
  
• 21774 Konus-Wind observation of GRB 170826A
  
• 21773 GRB 170830A: Astrosat CZTI detection
  
• 21772 LIGO/Virgo G299232: GRAWITA Asiago optical observations
  
• 21771 LIGO/Virgo G299232: continued WHT observations of the field of SwiftJ014008.5+343403.6
  
• 21770 LIGO/Virgo G298936: PIRATE observations
  
• 21769 LIGO/Virgo G299232 ANTARES search (2)
  
• 21768 LIGO/Virgo G298048: GMRT Follow-up of SSS17a at 1.4 GHz
  
• 21767 Konus-Wind observation of GRB 170826B
  
• 21766 LIGO/Virgo G299232: GRAWITA Campo Imperatore optical observations
  
• 21765 LIGO/Virgo G298048: Discovery of X-ray emission from SSS17a in NGC4993
  
• 21764 GRB 170830A: iTelescope optical observations
  
• 21763 LIGO/Virgo G298048: European VLBI Network (EVN) upper limit on 5 GHz compact emission from SSS17a
  
• 21762 LIGO/Virgo G299232: SVOM/2.16-m Optical Telescope Observations of Swift UVOT Transient
  
• 21761 GRB 170830A: MAXI/GSC detection
  
• 21760 LIGO/Virgo G298048: OVRO 40m telescope follow-up
  
• 21759 LIGO/Virgo G299232: HAWC follow-up
  
• 21758 LIGO/Virgo G299232: Further Swift/UVOT Observations of Optical Transient SwiftJ014008.5+343403.6
  
• 21757 LIGO/Virgo G299232: RATIR Optical and NIR Observations of Swift UVOT source
  
• 21756 LIGO/Virgo G299232: WHT non-detection u-band optical transient
  
• 21755 LIGO/Virgo G299232: Liverpool Telescope observations
  
• 21754 LIGO/Virgo G299232: observations of the optical Transient Discovered by Swift/UVOT
  
• 21753 IPN Triangulation of GRB 170826B
  
• 21752 LIGO/Virgo G299232: PIRATE observations of MASTER OT J033744.97+723159.0
  
• 21751 LIGO/Virgo G298936: Updated localization from parameter estimation on LIGO and Virgo data
  
• 21750 LIGO/Virgo G298048: ALMA upper limits on 98 GHz emission from SSS17a
  
• 21749 LIGO/Virgo G299232/PGWB170825.55: early MASTER observations of the Swift UVOT source position
  
• 21748 LIGO/Virgo G296853: PIRATE observations
  
• 21747 LIGO/Virgo G298048: ALMA observations
  
• 21746 LIGO/Virgo G298048: Konus-Wind observations
  
• 21745 LIGO/Virgo G299232: GRAWITA Asiago/Copernico Telescope observations
  
• 21744 LIGO/Virgo G298048: Zadko Telescope 7 day observations of the OT candidate SSS17a/DLT17ck
  
• 21743 GRB170827A: Further GROND follow-up observations
  
• 21742 LIGO/Virgo G299232: COATLI Observations of MASTER OT J033744.97+723159.0
  
• 21741 LIGO/Virgo G299232: MAXI/GSC observations
  
• 21740 LIGO/Virgo G298048: Further ATCA follow-up of SSS17a in NGC 4993
  
• 21739 GRB 170826B: Insight-HXMT detection
  
• 21738 LIGO/Virgo G299232: Continued observation of the transient near NGC 1343
  
• 21737 LIGO/Virgo G299232: WHT spectrum of MASTER OT J033744.97+723159.0
  
• 21736 LIGO/Virgo G299232/PGWB170825.55: MASTER OT J033744.97+723159.0 inside 25m isophota of the NGC1343 galaxy is reddening
  
• 21735 IPN Triangulation of GRB 170827B (short)
  
• 21734 IPN Triangulation of GRB 170826A (short)
  
• 21733 LIGO/Virgo G299232: Optical Transient Discovery by Swift/UVOT
  
• 21732 LIGO/Virgo G298936: HAWC follow-up
  
• 21731 LIGO/Virgo G299232 TZAC/TAROT observations
  
• 21730 GRB 170827A: Swift-XRT refined Analysis
  
• 21729 GROND observations of GRB170827A
  
• 21728 GRB 170827A: ePESSTO NTT afterglow candidate
  
• 21727 GRB 170823A: TAROT Calern observatory optical observations
  
• 21726 LIGO/Virgo G299232: OVRO-LWA simultaneous low frequency radio observations of localization region
  
• 21725 LIGO/Virgo G299232: LOFAR follow-up
  
• 21724 GRB 170827A, Swift-BAT refined analysis
  
• 21723 LIGO/Virgo G299232: Transient near NGC 1343 has a somewhat blue r-i color
  
• 21722 GRB 170827A: Swift/UVOT Upper Limits
  
• 21721 GRB 170827A: REM optical/NIR observations
  
• 21720 LIGO/Virgo G299232/PGWB170825.55: MASTER OTJ033744.97+723159.0 off set from NGC1343 galaxy
  
• 21719 LIGO/Virgo G299232/PGWB170825.55: MASTER Global-Net OT inside NGC1343 discovery
  
• 21718 GRB 170827A: Swift detection of a burst
  
• 21717 GRB 170826B: Fermi GBM detection
  
• 21716 LIGO/Virgo G299232: CALET Observations
  
• 21715 GRB 170826A: Fermi GBM detection
  
• 21714 LIGO/Virgo G298936: Astrosat CZTI upper limits
  
• 21713 LIGO/Virgo G299232: XRT Rank 2 source is not real
  
• 21712 LIGO/Virgo G299232: Astrosat CZTI upper limits
  
• 21711 LIGO/VIRGO G299232: Fermi GBM Observations
  
• 21710 LIGO/Virgo G299232: Fermi-LAT search for high-energy gamma-ray counterpart
  
• 21709 LIGO/Virgo G298389: HAWC follow-up
  
• 21708 LIGO/Virgo G298048: uGMRT Follow-up of SSS17a at 400 MHz and 1.4 GHz
  
• 21707 LIGO/Virgo G299232: Nearby Galaxies in the Localization Volume
  
• 21706 LIGO/Virgo G298936: CALET Observations
  
• 21705 GRB 170820A CALET Gamma-Ray Burst Monitor detection
  
• 21704 LIGO/Virgo G299232: Swift/BAT data search
  
• 21703 LIGO/VIRGO G298048: INAF VST-ESO PARANAL observations of NGC4993
  
• 21702 GRB 170822A: AstroSat CZTI detection
  
• 21701 LIGO/Virgo G299232: AGILE GRID observations
  
• 21700 LIGO/Virgo G299232: AGILE MCAL detection of a short gamma-ray candidate
  
• 21699 LIGO/Virgo G299232: INTEGRAL search for a prompt gamma-ray counterpart
  
• 21698 LIGO/Virgo G299232: COINCIDENT IceCube neutrino observation UPDATE
  
• 21697 LIGO/Virgo G296853: VLT observations by GLGW Hunters
  
• 21696 LIGO/Virgo G299232 ANTARES search
  
• 21695 LIGO/Virgo G297595: INTEGRAL pointed follow-up observations
  
• 21694 LIGO/Virgo G299232: FOUND COINCIDENT IceCube neutrino observation
  
• 21693 LIGO/Virgo G299232: Identification of a GW Compact Binary Coalescence Candidate
  
• 21692 LIGO/Virgo G297595: Gemini and VLT observations by GLGW Hunters
  
• 21691 LIGO/Virgo G298936: Liverpool Telescope Spectoscopy of GWFUNC-17ure
  
• 21690 LIGO/Virgo G298936 TAROT/TZAC observations
  
• 21689 GRB 170825A: AGILE/MCAL Detection
  
• 21688 LIGO/Virgo G298936 : MAXI/GSC observations
  
• 21687 LIGO/Virgo G298048: MASTER Global-Net early optical observations and the Possible KiloNova SSS17a in NGC 4993 photometry and merging rate
  
• 21686 LIGO/Virgo G298048: Pierre Auger Observatory neutrino follow-up
  
• 21685 LIGO/Virgo G298048: Subaru HSC z-band imaging of the OT candidate SSS17a
  
• 21684 LIGO/Virgo G298048: Near-infrared fading from Gemini-South
  
• 21683 LIGO/Virgo G298048: HAWC follow-up
  
• 21682 LIGO/Virgo G298048: Gemini-South Imaging and Spectroscopy
  
• 21681 LIGO/Virgo G298048: MUSE Integral Field Observations
  
• 21680 LIGO/Virgo G298048: LWA radio observations
  
• 21679 Konus-Wind observation of GRB 170822A
  
• 21678 GRB 170823A: Swift-BAT refined analysis
  
• 21677 LIGO/VIRGO G298048: AAT/AAO spectroscopic observations of the GW counterpart candidate SSS17a/DLT17ck
  
• 21676 LIGO/Virgo G298048: LOFAR follow-up
  
• 21675 LIGO/Virgo G298936: GWFUNC/CNEOST optical observations and an optical transient
  
• 21674 LIGO/Virgo G298048: H.E.S.S. very-high energy gamma-ray follow-up
  
• 21673 LIGO/Virgo G297595: H.E.S.S. very-high energy gamma-ray follow-up
  
• 21672 LIGO/Virgo G298048: INTEGRAL pointed follow-up observations
  
• 21671 LIGO/Virgo G298048: Results of the ASKAP search for fast radio bursts
  
• 21670 LIGO/Virgo G298048: ATCA follow-up of SSS17a in NGC 4993
  
• 21669 LIGO/Virgo G298048: Properties of NGC 4993
  
• 21668 LIGO/Virgo G298389: CALET Observations
  
• 21667 LIGO/Virgo G298936 : Fermi-LAT search for a high-energy gamma-ray counterpart
  
• 21666 GRB 170823A: Swift detection of a burst
  
• 21665 LIGO/Virgo G298936: Swift/BAT data search
  
• 21664 LIGO/Virgo G298048: Continued VLA monitoring at 6 GHz
  
• 21663 LIGO/VIRGO G298936: Fermi GBM Observations
  
• 21662 LIGO/Virgo G298936: AGILE GRID observations
  
• 21661 LIGO/Virgo G298936: Updated localization from gravitational-wave data
  
• 21660 LIGO/Virgo G298936: AGILE MCAL observations
  
• 21659 LIGO/Virgo G298936 ANTARES search
  
• 21658 LIGO/Virgo G298936: INTEGRAL was inactive at the time of the event
  
• 21657 LIGO/Virgo G298936: IceCube neutrino observations
  
• 21656 LIGO/Virgo G298936: Identification of a GW Binary Black Hole Candidate
  
• 21655 GRB 170822A: RATIR Optical and NIR Observations
  
• 21654 GRB 170822A: AbAO optical upper limit
  
• 21653 LIGO/Virgo G298048: ESO/VLT optical observations
  
• 21652 GRB 170822A: MITSuME Akeno Optical Observation
  
• 21651 GRB 170822A: Swift-BAT refined analysis
  
• 21650 LIGO/VIRGO G298048: VLA/JAGWAR observations of the CLU galaxies
  
• 21649 GRB 170822A: Swift/UVOT Upper Limits
  
• 21648 LIGO/Virgo G298048: Chandra X-ray observations
  
• 21647 GRB 170822A: Swift-XRT refined Analysis
  
• 21646 LIGO/Virgo G298389: MAXI/GSC observations
  
• 21645 LIGO/Virgo G298048: Global properties and star-formation rate of NGC 4993
  
• 21644 LIGO/Virgo G298048: observations of optical counterpart candidate with CHILESCOPE observatory
  
• 21643 GRB 170822A: Enhanced Swift-XRT position
  
• 21642 GRB 170822A:BOOTES-5/JGT optical afterglow candidate
  
• 21641 LIGO/Virgo G298048: CALET Observations
  
• 21640 GRB 170822A: Swift detection of a burst
  
• 21639 LIGO/Virgo G298048: ASKAP observations of SSS17a and NGC 4993 at 1.345 GHz
  
• 21638 LIGO/Virgo G298048: Gemini-South Near-Infrared Spectroscopy
  
• 21637 LIGO/Virgo G298048: MWA Observations of Error Region
  
• 21636 LIGO/Virgo G298048: VLA observation at 15 GHz
  
• 21635 LIGO/Virgo G298048: observations of optical counterpart candidate with CHILESCOPE observatory
  
• 21634 LIGO/Virgo G298048: TOROS Spectra observation with CASLEO
  
• 21633 LIGO/Virgo G298048: Pan-STARRS izy photometry of SSS17a/DLT17ck
  
• 21632 LIGO/Virgo G298048: Continued monitoring of the optical counterpart candidate
  
• 21631 LIGO/Virgo G298048 ANTARES search (2)
  
• 21630 Konus-Wind observation of GRB 170816A
  
• 21629 LIGO/Virgo G298048: Correction to ATCA 8.5 GHz observations
  
• 21628 LIGO/Virgo G298048: ATCA 8.5 GHz observations of galaxies in the localisation volume
  
• 21627 LIGO/Virgo G298048: Zadko observations of the OT candidate SSS17a/DLT17ck
  
• 21626 LIGO/Virgo G298048: NuSTAR limits on X-ray emission
  
• 21625 LIGO/Virgo G298048: ASKAP follow up
  
• 21624 LIGO/Virgo G298048: optical observations with BOOTES-5 at San Pedro Mártir
  
• 21623 LIGO/Virgo G298048: Kanata/HONIR NIR photometry of the possible counterpart of G298048
  
• 21622 LIGO/Virgo G298389: Swift/BAT data search
  
• 21621 LIGO/Virgo G298048: On the kick velocity and age of the binary Neutron Stars Progenitor
  
• 21620 LIGO/Virgo G298048: TOROS optical counterpart search (continuation)
  
• 21619 LIGO/Virgo G298048: TOROS optical counterpart search
  
• 21618 LIGO/Virgo G298048: optical observations of CHILESCOPE observatory
  
• 21617 LIGO/Virgo G298048: Pan-STARRS izy photometry monitoring of SSS17a/DLT17ck
• 21616 LIGO/Virgo G298389: Fermi-LAT search for a high-energy gamma-ray counterpart
  
• 21615 GRB 170816A CALET Gamma-Ray Burst Monitor detection
  
• 21614 LIGO/Virgo G298048: VLA observation at 6 GHz
  
• 21613 LIGO/Virgo G298048: Continued VLA observations
  
• 21612 LIGO/Virgo G298048: Possible X-ray detection with Swift
  
• 21611 LIGO/Virgo G298389: INTEGRAL search for a prompt gamma-ray counterpart
  
• 21610 LIGO/VIRGO G298048: SALT optical spectra of the candidate optical/NIR counterpart of the gravitational wave G298048 in NGC4993.
  
• 21609 LIGO/Virgo G298048: Etelman Observatory observation of the potential LIGO EM counterpart SSS17a
  
• 21608 LIGO/Virgo G298048: GROND observations of candidate optical counterpart
  
• 21607 LIGO/Virgo G298389: Fermi GBM Upper Limits
  
• 21606 LIGO/Virgo G298048: Continued observation for DLT17ck
  
• 21605 LIGO/Virgo G298389: AGILE MCAL observations
  
• 21604 LIGO/Virgo G298389: AGILE GRID observations
  
• 21603 LIGO/Virgo G298048: GMRT Follow-up of SSS17a
  
• 21602 LIGO/Virgo G298389: IceCube neutrino observations
  
• 21601 LIGO/Virgo G298389 ANTARES search
  
• 21600 LIGO/Virgo G298389: Identification of a GW Burst Candidate
  
• 21599 LIGO/Virgo G298048: La Silla - QUEST archival non-detections of of LIGO EM counterpart SSS17a
  
• 21598 LIGO/VIRGO G298048: INAF VST-ESO PARANAL observations
  
• 21597 LIGO/Virgo G298048: KMTNet and other optical follow-up observations
  
• 21596 LIGO/Virgo G298048: further REM optical/NIR observations of candidate in NGC 4993
  
• 21595 LIGO/Virgo G298048: Subaru HSC z-band photometry confirms the fading nature of SSS17a
  
• 21594 LIGO/Virgo G298048: VLT linear polarimetry
  
• 21593 GRB 170817B: Insight-HXMT observation
  
• 21592 LIGO/Virgo G298048: GRAWITA VLT/X-shooter observations
  
• 21591 LIGO/Virgo G298048: NOT near-infrared observations of SSS17a
  
• 21590 LIGO/Virgo G298048: Further Pan-STARRS izy photometry confirms rapid fading of SSS17a/DLT17ck in i and z bands
  
• 21589 LIGO/Virgo G298048: Further VLA Observations
  
• 21588 LIGO/Virgo G298048: VLBA observations of the possible counterpart SSS17a in NGC 4993
  
• 21587 LIGO/Virgo G298048: MASTER photometry of the SSS17a in NGC 4993
  
• 21586 LIGO/Virgo G298048: HSC observations of the OT candidate of G298048
  
• 21585 LIGO/Virgo G298048: Possible features in the spectrum of GW counterpart SSS17a
  
• 21584 LIGO/Virgo G298048: GROND photometry of candidate optical counterpart reveals brightening in the NIR
  
• 21583 LIGO/Virgo G298048: Additional Swope Observations of SSS17a
  
• 21582 LIGO/VIRGO G298048: ePESSTO optical spectra of the candidate optical/NIR counterpart of the gravitational wave G298048 in NGC4993.
  
• 21581 LIGO/Virgo G298048: Rapid Evolution of Possible Counterpart
  
• 21580 LIGO/Virgo G298048: Observed fading of optical counterpart SSS17a
  
• 21579 LIGO/Virgo G298048: Continued observation for DLT17ck
  
• 21578 LIGO/VIRGO G298048: Expansion Velocity of SSS17a Consistent With Relativistic Merger Ejecta
  
• 21577 LIGO/Virgo G298048: optical spectral energy distribution of SSS17a
  
• 21576 LIGO/Virgo G298048: prior photometry from VISTA Hemisphere Survey
  
• 21575 LIGO/Virgo G298048: Archival 2MASS and Spitzer non-detections of the potential LIGO EM counterpart SSS17a
  
• 21574 LIGO/Virgo G298048: ATCA upper limits on radio emission from optical source SSS17a in NGC 4993
  
• 21573 GRB 170818A: Fermi GBM detection
  
• 21572 LIGO/Virgo G298048: Continued Swift UV and X-ray Monitoring of SSS17a
  
• 21571 LIGO/Virgo G298048: Archival VLA observations
  
• 21570 LIGO/Virgo G298048: New MASTER observations of the OT in NGC 4993
  
• 21569 LIGO/Virgo G298048: Additional Gemini-South acknowledgements
  
• 21568 LIGO/Virgo G298048: UPDATE on IceCube neutrino candidates --- no coincidence with newest GW skymap
  
• 21567 LIGO/Virgo G298048: Correction to Swope photometry announced in LVC GCN 21529
  
• 21566 LIGO/Virgo G298048: Moderate dimming or no brightening of the optical counterpart candidate?
  
• 21565 LIGO/Virgo G298048: Brightening of Possible Counterpart
  
• 21564 LIGO/Virgo G298048: AGILE-GRID analysis of the potential counterpart field
  
• 21563 LIGO/Virgo G298048: Observation of the potential optical counterpart in NGC 4993
  
• 21562 LIGO/Virgo G298048: ASKAP search for fast radio bursts
  
• 21561 LIGO/Virgo G298048: Subaru HSC z-band photometry of the possible optical counterpart
  
• 21560 LIGO/Virgo G298048: SkyMapper uvgri photometry of the candidate in NGC 4933
  
• 21559 LIGO/Virgo G298048: ATCA detection of a radio source coincident with NGC 4993
  
• 21558 LIGO/Virgo G298048: TZAC TAROT Reunion (TRE) observations
  
• 21557 LIGO/Virgo G298048: Likelihood of SSS17a Being an Unrelated Extragalactic Transient in NGC 4993
  
• 21556 LIGO/Virgo G298048: REM optical/NIR observations
  
• 21555 LIGO/Virgo G298048, Fermi GBM trigger 524666471/170817.529: MAXI/GSC observations
  
• 21554 LIGO/Virgo G298048: HCT observations
  
• 21553 LIGO/Virgo G298048: Pan-STARRS detections and izy photometry of the possible optical/NIR counterpart in NGC4993
  
• 21552 LIGO/Virgo G298048: Gemini-South Near-Infrared Photometry of the Optical Transient Candidate
  
• 21551 LIGO/Virgo G298048: Magellan g-band Imaging of the Potential Optical Counterpart Associated with NGC 4993
  
• 21550 LIGO/VIRGO G298048: Swift UVOT detection and XRT upper limits
  
• 21549 LIGO/Virgo G298048: Subaru HSC follow-up observations
  
• 21548 LIGO/Virgo G298048: VLA Refined Analysis
  
• 21547 LIGO/VIRGO G298048: Magellan Optical Spectrum of the Potential Optical Counterpart Associated with NGC 4993
  
• 21546 LIGO/Virgo G298048: MASTER observations of the NGC 4993
  
• 21545 LIGO/Virgo G298048: VLA Detection
  
• 21544 LIGO/Virgo G298048: VISTA/VIRCAM detection of candidate counterpart
  
• 21543 LIGO/Virgo G298048: Galaxy-Targeted Optical Followup With Las Cumbres Observatory
  
• 21542 LIGO/Virgo G298048: Optical Candidate Shows No Evidence for Previous Activity in Archival SkyMapper Transient Survey Data
  
• 21541 LIGO/VIRGO G298048: The Potential Optical Counterpart in NGC 4993 Has Afterglow-Like Colors
  
• 21540 GRB 170817B: Fermi GBM detection
  
• 21539 LIGO/Virgo G298048: DLT40 follow-up observation
  
• 21538 LIGO/Virgo G298048: Las Cumbres Observatory Detection of The Possible Optical Counterpart in NGC 4993
  
• 21537 LIGO/Virgo G298048: ATCA observations of candidate host galaxies
  
• 21536 LIGO/Virgo G298048: Inspection of archival HST data at the position of the potential optical counterpart
  
• 21535 LIGO/Virgo G298048: Nearby Galaxies in the Localization Volume using the updated sky map computed using LALInference
  
• 21534 LIGO/Virgo G298048: Fermi-LAT search for a high-energy gamma-ray counterpart
  
• 21533 LIGO/Virgo G298048: Optical Candidate Shows No Evidence for Previous Activity in Archival ASAS-SN Data
  
• 21532 LIGO/Virgo G298048: REM optical/NIR observations of candidate in NGC 4993
  
• 21531 LIGO/Virgo G298048: DLT40 optical candidate
  
• 21530 LIGO/Virgo G298048: DECam optical candidate
  
• 21529 LIGO/Virgo G298048: Potential optical counterpart discovered by Swope telescope
  
• 21528 LIGO/Virgo G298048 - Update on Fermi/GBM GRB 170817A Analysis
  
• 21527 LIGO/Virgo G298048: Updated sky map from gravitational-wave data
  
• 21526 LIGO/Virgo G298048: AGILE GRID observations
  
• 21525 LIGO/Virgo G298048: AGILE MCAL observations
  
• 21524 LIGO/Virgo G298048: Swift/BAT data search
  
• 21523 LIGO/Virgo G297595: Pierre Auger Observatory neutrino follow-up
  
• 21522 LIGO/Virgo G298048 ANTARES search
  
• 21521 LIGO/Virgo G298048: Nearby Galaxies in the Localization Volume with Face-on Assumption
  
• 21520 GRB 170817A: Fermi GBM detection
  
• 21519 LIGO/Virgo G298048: Nearby Galaxies in the Localization Volume
  
• 21518 LIGO/Virgo G298048: Insight-HXMT observations
  
• 21517 IPN Triangulation of GRB 170816A (short/hard)
  
• 21516 LIGO/Virgo G298048: Potential host galaxies from the GLADE catalog
  
• 21515 LIGO/Virgo G298048: IPN triangulation of Fermi/GBM trigger 524666471/170817529
  
• 21514 LIGO/Virgo G298048: Astrosat CZTI upper limits
  
• 21513 LIGO/Virgo G298048: Further analysis of a binary neutron star candidate with updated sky localization
  
• 21512 LIGO/Virgo G297595: Liverpool Telescope observations of MASTER transients
  
• 21511 LIGO/Virgo G298048: COINCIDENT IceCube neutrino candidate with Fermi GBM trigger 524666471/170817529
  
• 21510 LIGO/Virgo G298048: correction to the luminosity distance reported in GCN 21509
  
• 21509 LIGO/Virgo G298048: Identification of a binary neutron star candidate coincident with Fermi GBM trigger 524666471/170817529
  
• 21508 LIGO/Virgo G298048: FOUND COINCIDENT IceCube neutrino observation
  
• 21507 LIGO/Virgo G298048: INTEGRAL detection of a prompt gamma-ray counterpart
  
• 21506 LIGO/Virgo G298048: Fermi GBM trigger 170817.529 and LIGO single IFO trigger
  
• 21505 LIGO/Virgo G298048: Fermi GBM trigger 524666471/170817529: LIGO/Virgo Identification of a possible gravitational-wave counterpart
  
• 21504 GRB 170816A: Fermi GBM detection
  
• 21503 LIGO/Virgo G297595: Swift-XRT sources
  
• 21502 GRB 170805A: AstroSat CZTI detection
  
• 21501 LIGO/Virgo G296853: TZAC TAROT observations
  
• 21500 LIGO/Virgo G297595: Konus-Wind observations
  
• 21499 LIGO/Virgo G297595: MASTER MASTER Bright PSN detection in error-box
  
• 21498 LIGO/Virgo G297595: INAF VST-ESO PARANAL observations
  
• 21497 LIGO/Virgo G297595: Subaru Hyper Suprime-Cam follow-up observations
  
• 21496 LIGO/Virgo G296853: Pierre Auger Observatory neutrino follow-up
  
• 21495 LIGO/Virgo G297595: REM optical/NIR observations
  
• 21494 LIGO/Virgo G297595: MAXI/GSC observations
  
• 21493 LIGO/Virgo G297595: Updated localization from LIGO and Virgo data
  
• 21492 GRB 170810A: VLA Detection
  
• 21491 GRB 170813A: Fermi GBM observation
  
• 21490 Fermi GBM trigger 524493492/170815526 is not a GRB
  
• 21489 LIGO/Virgo G297595: Correction to luminosity distance stated in GCN 21474
  
• 21488 LIGO/Virgo G297595: Pan-STARRS coverage and transients over the first 5hrs
  
• 21486 LIGO/Virgo G297595: Insight-HXMT observations
  
• 21485 LIGO/Virgo G297595: Nearby Galaxies in the Localization Volume
  
• 21484 LIGO/Virgo G297595: Fermi GBM Observations
  
• 21483 LIGO/Virgo G297595: Swift/BAT data search
  
• 21482 LIGO/Virgo G297595: AGILE GRID observations
  
• 21481 LIGO/Virgo G297595 : Fermi-LAT search for high-energy gamma-ray counterpart
  
• 21480 GRB 170813A: Swift/UVOT Upper Limits
  
• 21479 LIGO/Virgo G297595 ANTARES search
  
• 21478 LIGO/Virgo G297595: INTEGRAL search for a prompt gamma-ray counterpart
  
• 21477 LIGO/Virgo G297595: AGILE MCAL observations
  
• 21476 LIGO/Virgo G297595: SPI-ACS/INTEGRAL data investigations
  
• 21475 LIGO/Virgo G297595: IceCube neutrino observations
  
• 21474 LIGO/Virgo G297595: Identification of a GW Binary Merger Candidate
  
• 21473 GRB 170813A: Swift-BAT refined analysis
  
• 21472 GRB 170813A: RATIR Optical and NIR Observations
  
• 21471 GRB 170810A: AbAO optical upper limit
  
• 21470 GRB 170813A: Swift-XRT refined Analysis
  
• 21469 GRB 170813A: Enhanced Swift-XRT position
  
• 21468 GRB 170813A: Swift detection of a burst
  
• 21467 LIGO/Virgo G296853: Liverpool Telescope classification of MASTER OT J013646.48-140323.5
  
• 21466 GRB 170728B: 15 GHz upper limits from AMI
  
• 21465 GRB 170728A: 15 GHz upper limits from AMI
  
• 21464 GRB 170714A: 15 GHz upper limits from AMI
  
• 21463 GRB 170711A: 15 GHz upper limits from AMI
  
• 21462 GRB 170710C: 15 GHz upper limits from AMI
  
• 21461 GRB 170710B: 15 GHz upper limits from AMI
  
• 21460 GRB 170626A: 15 GHz upper limits from AMI
  
• 21459 LIGO/Virgo G296853: BOOTES-1 and GTC optical observations
  
• 21458 GRB 170810A: Swift-BAT refined analysis
  
• 21457 LIGO/Virgo G296853: Insight-HXMT observations
  
• 21456 LIGO/Virgo G296853: MAXI/GSC observations
  
• 21455 GRB 170810A: Swift-XRT refined Analysis
  
• 21454 GRB 170810A: Swift/UVOT Detection
  
• 21453 GRB 170810A: Fermi GBM observation
  
• 21452 GRB 170810A: Fermi-LAT detection
  
• 21451 GRB 170810A: Enhanced Swift-XRT position
  
• 21450 GRB 170810A: Swift detection of a burst with a bright optical counterpart
  
• 21449 GRB 170810A: MASTER-NET very bright OT detection
  
• 21448 LIGO/Virgo G296853: HAWC follow-up
  
• 21447 Konus-Wind observation of GRB 170808B
  
• 21446 LIGO/Virgo G296853: Super-AGILE observations
  
• 21445 LIGO/Virgo G296853: MASTER SN detection near center error-area
  
• 21444 GRB 170805B: Insight-HXMT observation
  
• 21443 GRB 170803B: Insight-HXMT detection
  
• 21442 Konus-Wind observation of GRB 170805B
  
• 21441 GMRT upper limit on the radio afterglow of GRB 170728B
  
• 21440 LIGO/Virgo G296853: no INTEGRAL data at the time of the event
  
• 21439 LIGO/Virgo G296853: Fermi-LAT search for high-energy gamma-ray counterpart
  
• 21438 LIGO/Virgo G296853: Fermi GBM Observations
  
• 21437 LIGO/Virgo G296853: AGILE GRID observations
  
• 21436 LIGO/Virgo G296853: Swift/BAT data search
  
• 21435 LIGO/Virgo G296853: MASTER follow up observations
  
• 21434 LIGO/Virgo G296853: AGILE MCAL observations
  
• 21433 LIGO/Virgo G296853: ANTARES search
  
• 21432 LIGO/Virgo G296853: IceCube neutrino observations
  
• 21431 LIGO/Virgo G296853: Identification of a GW Binary Merger Candidate
  
• 21430 GRB 170808B: Fermi LAT Detection
  
• 21429 GRB 170808B: Fermi GBM observation
  
• 21428 IPN Triangulation of GRB 170805B (short/hard)
  
• 21427 IPN Triangulation of GRB 170805A (short)
  
• 21426 GRB 170801A: Insight-HXMT detection
  
• 21425 Konus-Wind observation of GRB 170724A
  
• 21424 GRB 170714A: ATCA detection of the radio counterpart
  
• 21423 GRB 170807A: Swift-BAT refined analysis
  
• 21422 GRB 170808A: MAXI/GSC detection
  
• 21421 GRB 170805A: Insight-HXMT detection
  
• 21420 GRB 170807A: Swift detection of a burst
  
• 21419 GRB 170728B: TShAO, SAO RAS and AbAO optical observations
  
• 21418 GRB 170803A: Swift/BAT spectral lag results
  
• 21417 GRB 170804A: LCO Observations
  
• 21416 GRB 170804A: Swift-BAT refined analysis
  
• 21415 GRB 170804A: Swift/UVOT Detection
  
• 21414 GRB 170804A: Swift-XRT refined Analysis
  
• 21413 GRB 170804A: Enhanced Swift-XRT position
  
• 21412 GRB 170803A: Swift-BAT refined analysis
  
• 21411 GRB 170803A: Swift/UVOT Detection
  
• 21410 GRB 170804A: Swift detection of a burst with optical counterpart
  
• 21409 Swift Trigger 766161 is not a GRB
  
• 21408 GRB 170803A: Swift-XRT refined Analysis
  
• 21407 GRB 170803A: Enhanced Swift-XRT position
  
• 21406 GRB 170803A: Fermi GBM observation
  
• 21405 GRB 170803A: Swift detection of a burst with an optical counterpart
  
• 21404 GRB 170802A: Fermi GBM detection
  
• 21403 Swift Trigger 765783 is not an astrophysical event.
  
• 21402 GRB 160814A: Lomonosov BDRG gamma ray discovery
  
• 21401 GRB 170728B: time correction to MASTER GCN Circular 21391
  
• 21400 Swift J181723.1-164300: Swift detection of another pulse of the new Galactic source
  
• 21399 GRB 170728B: Swift/UVOT Further Analysis
  
• 21398 Konus-Wind observation of GRB 170728B
  
• 21397 GRB 170726A: AstroSat CZTI detection
  
• 21396 GRB 170714A: Chandra observations
  
• 21395 GRB 170728B: VLA radio afterglow detection
  
• 21394 GRB 170728B: Optical observations at Crni Vrh
  
• 21393 GRB 170728B: BOOTES-2/TELMA optical detection during the extended gamma-ray phase
  
• 21392 GRB170730A detecetd by INTEGRAL. Refined analysis
  
• 21391 GRB 170728B: MASTER-IAC first minute short GRB early OT detection
  
• 21390 IBAS weak Alert nr.7881: possible GRB 170730A
  
• 21389 GRB 170728B: COATLI Observations And Confirmation of Fading
  
• 21388 GRB 170728B: Swift/UVOT Upper Limits
  
• 21387 GRB 170728B iTelescope observation
  
• 21386 GRB 170728A: Swift/UVOT Detection
  
• 21385 Swift J181723.1-164300: Swift-BAT refined analysis
  
• 21384 GRB 170728B, Swift-BAT refined analysis
  
• 21383 GRB 170728B: Fermi GBM detection
  
• 21382 GRB 170728A: LCO observations
  
• 21381 GRB 170728B: I-band detection from 1.5m OSN
  
• 21380 GRB 170728B: Fermi-LAT detection
  
• 21379 GRB170714A: XMM observation of the afterglow
  
• 21378 GRB 170728A: Swift-XRT refined Analysis
  
• 21377 GRB 170728B: Enhanced Swift-XRT position
  
• 21376 GRB 170728B: Swift-XRT refined Analysis
  
• 21375 GRB 170728B: LT afterglow confirmation
  
• 21374 GRB 170728B: NOT optical afterglow confirmation
  
• 21373 GRB 170728B: position of the TNG optical counterpart
  
• 21372 GRB 170728B: TNG optical afterglow candidate
  
• 21371 GRB 170728B: Swift detection of a short burst
  
• 21370 GRB 170728A: Swift-BAT refined analysis
  
• 21369 Swift triggers on a new galactic source: Swift J181723.1-164300
  
• 21368 GRB 170728A: Enhanced Swift-XRT position
  
• 21367 GRB 170728A: Swift detection of a burst
  
• 21366 GRB 170726A: Insight-HXMT detection
  
• 21365 GRB 170724A, Swift-BAT refined analysis
  
• 21364 GRB 170724A: Swift detection of a burst
  
• 21363 Fermi GBM trigger 522477026/170723188 is not a GRB
  
• 21362 Fermi GBM trigger 522470841/170723116 is not a GRB
  
• 21361 Fermi GBM trigger 522334209/170721535 is not a GRB
  
• 21360 GRB170714A: ATCA observation
  
• 21359 GRB 170714A: Bastille Day Burst redshift from OSIRIS/GTC
  
• 21358 Trigger 763539 from Swift is probably not astrophysical
  
• 21357 Fermi GBM trigger 522048561/170718229 is not a GRB
  
• 21356 GRB 170714A: NOEMA non-detection of the Bastille Day Burst
  
• 21355 LIGO/Virgo G275697: LOFAR follow-up
  
• 21354 GRB 170710B: Further Swift-XRT observations
  
• 21353 Correction to GCN Circular 21351: GRB 170714A: Swift/UVOT Observations
  
• 21352 GRB170714A: VLA Observations of the Bastille Day Ultra-long Burst
  
• 21351 GRB 170714A: Swift/UVOT Observations
  
• 21350 GRB 170714A: TNG NIR observations
  
• 21349 Fermi GBM trigger 521905898/170716577 is not a GRB
  
• 21348 GRB 170702A: AstroSat CZTI detection
  
• 21347 GRB 170714A, Swift-BAT refined analysis
  
• 21346 GRB 170714A: z-band afterglow candidate for OSIRIS/GTC
  
• 21345 GRB 170714A: Bastille Day Burst: ULGRB or RTDE?
  
• 21344 GRB 170714B: Insight-HXMT detection
  
• 21343 GRB 170714A: Swift-XRT refined Analysis
  
• 21342 Fermi GBM Detection of possible burst from AXP 4U 0142+61
  
• 21341 GRB 170714A: Enhanced Swift-XRT position
  
• 21340 GRB 170714A: Swift detection of a burst
  
• 21339 GRB 170712A: AstroSat CZTI detection
  
• 21338 Correction to GCN Circular 21337: GRB 170710D CALET Gamma-Ray Burst Monitor detection
  
• 21337 GRB 170710C CALET Gamma-Ray Burst Monitor detection
  
• 21336 GRB 170708B CALET Gamma-Ray Burst Monitor detection
  
• 21335 GRB 170703A CALET Gamma-Ray Burst Monitor detection
  
• 21334 GRB 170702A CALET Gamma-Ray Burst Monitor detection
  
• 21333 GRB 170711A: ISON/Terskol and AbAO optical observations
  
• 21332 GRB 170712A: Insight-HXMT detection
  
• 21331 GRB 170711A: Swift-BAT refined analysis
  
• 21330 Konus-Wind observation of GRB 170708A
  
• 21329 GRB 170711A: Swift/UVOT Upper Limits
  
• 21328 GRB 170711A: RATIR Optical and NIR Observations
  
• 21327 GRB 170705A: AstroSat CZTI detection
  
• 21326 GRB 170710C: a long GRB detected by INTEGRAL
  
• 21325 GRB 170711A: Swift-XRT refined Analysis
  
• 21324 GRB 170711A: Fermi GBM observation
  
• 21323 GRB 170711A: Enhanced Swift-XRT position
  
• 21322 GRB 170711A: Prompt enhanced Swift-XRT position
  
• 21321 GRB 170711A: Swift detection of a burst
  
• 21320 GRB 170705A: TShAO optical observations
  
• 21319 GRB 170710B: Fermi GBM observation
  
• 21318 GRB 170710B: Swift-XRT and UVOT observations
  
• 21317 GRB 170710B: Swift ToO observations
  
• 21316 GRB 170710B: Swift detection of a burst
  
• 21315 GRB170710A: Swift/UVOT detection
  
• 21314 IPN Triangulation of GRB 170708A (short)
  
• 21313 GRB 170710A: Swift-BAT refined analysis
  
• 21312 GRB 170710A: Swift-XRT refined Analysis
  
• 21311 GRB 170710A: Gemini-S candidate counterpart
  
• 21310 GRB 170710A: Enhanced Swift-XRT position
  
• 21309 GRB 170710A: Prompt enhanced Swift-XRT position
  
• 21308 GRB 170710A: Swift detection of a burst
  
• 21307 GRB 170708A: Insight-HXMT detection
  
• 21306 Correction to GCN Circular 21305: Trigger 760835: Swift misidentification of GRS1716-249
  
• 21305 Trigger 760835: Swift misidentification of GRS1716-249
  
• 21304 LIGO/Virgo G288732: Konus-Wind observations
  
• 21303 GRB 170705A: Further RATIR Optical and NIR Observations and Steepening of Fading
  
• 21302 GRB 170705A: KAIT Optical Observations
  
• 21301 GRB 170705A: Insight-HXMT observation
  
• 21300 GRB 170705A: ISON/Terskol optical observations
  
• 21299 Konus-Wind observation of GRB 170705A
  
• 21298 GRB 170705A: Redshift from 10.4m GTC/OSIRIS
  
• 21297 GRB 170705A: Fermi GBM observation
  
• 21296 GRB 170705A: Swift-BAT refined analysis
  
• 21295 GRB 170705A: MITSuME Akeno Optical Observation
  
• 21294 GRB 170705A: Swift/UVOT Detection
  
• 21293 GRB 170705A: RATIR Optical and NIR Observations
  
• 21292 GRB 170705A: Swift-XRT refined Analysis
  
• 21291 GRB 170705A: MASTER-OAFA early OT observations
  
• 21290 GRB 170705A: Enhanced Swift-XRT position
  
• 21289 GRB 170705A: Swift detection of a burst with an optical counterpart
  
• 21288 GRB 170629A: Swift-XRT refined Analysis
  
• 21287 GRB 170629A: Swift-BAT refined analysis
  
• 21286 GRB 170629A: Enhanced Swift-XRT position
  
• 21285 GRB 170629A: Fermi GBM observation
  
• 21284 LIGO/Virgo G274296: Updated localization from LIGO data
  
• 21283 GRB 170629A: Swift detection of a burst
  
• 21282 GRB 170626B CALET Gamma-Ray Burst Monitor detection
  
• 21281 LIGO/Virgo G270580: Candidate retracted due to H1 data quality
  
• 21280 Konus-Wind observation of GRB 170626B
  
• 21279 IPN Triangulation of GRB 170626B
  
• 21278 Konus-Wind observation of GRB 170626A
  
• 21277 GRB 170626A: SAO RAS confirmation of OT fading
  
• 21276 GRB 170626A: TShAO optical observations
  
• 21275 GRB 170607A: 15 GHz upper limits from AMI
  
• 21274 GRB 170626A: Insight-HXMT observation
  
• 21273 GRB 170626A: OASDG optical observations
  
• 21272 GRB 170626A: MASTER-Tunka OT detection.
  
• 21271 GRB 170626A: Swift-BAT refined analysis
  
• 21270 GRB 170626A: TNG optical observations
  
• 21269 GRB 170626A: Afterglow detection from 1.5m OSN
  
• 21268 GRB 170626A: SAO RAS possible OT detection
  
• 21267 GRB 170626A: Swift-XRT refined Analysis
  
• 21266 GRB 170626A: Fermi GBM observation
  
• 21265 GRB 170626B: The first GRB detected by the Insight-HXMT X-ray Telescope
  
• 21264 GRB 170626A: Swift detection of a burst
  
• 21263 LIGO/Virgo G288732: Fermi GBM Upper Limits for the LIGO Trigger and LAT Candidate
  
• 21262 LIGO/Virgo G288732: Pan-STARRS coverage of the Fermi/LAT candidate position
  
• 21261 Swift trigger 758168 is probably not an astrophysical source
  
• 21260 Swift Trigger 758005 is Probably Not an Astrophysical Source
  
• 21259 GRB 170607A CALET Gamma-Ray Burst Monitor detection
  
• 21258 Konus-Wind observation of GRB 170616A
  
• 21257 IPN Triangulation of GRB 170616A (short/hard)
  
• 21256 GRB 170614A: AstroSat CZTI detection
  
• 21255 GRB 170614A CALET Gamma-Ray Burst Monitor detection
  
• 21254 GRB 170606A CALET Gamma-Ray Burst Monitor detection
  
• 21253 LIGO/Virgo G288732: VLA imaging of the possible Fermi/LAT counterpart
  
• 21252 Swift Trigger 756953: false identification by MASTER GCN 21250
  
• 21251 Swift Trigger 756953 is probably not an astrophysical source
  
• 21250 GRB170612.87 MASTER-Net OT detection
  
• 21249 LIGO/Virgo G288732: Kiso/KWFC optical imaging of the possible Fermi/LAT counterpart
  
• 21248 LIGO/Virgo G288732: HAWC follow-up
  
• 21247 Konus-Wind observation of GRB 170604A
  
• 21246 Konus-Wind observation of GRB 170607B
  
• 21245 LIGO/Virgo G288732: UKIRT near-IR imaging of the Fermi/LAT candidate
  
• 21244 LIGO/Virgo G288732: LBT optical imaging of the Fermi/LAT candidate
  
• 21243 GRB 170610A: MAXI/GSC detection
  
• 21242 IPN Triangulation of GRB 170607B
  
• 21241 LIGO/Virgo G288732: MAXI/GSC observations
  
• 21240 GRB 170607A: Redshift from GTC/OSIRIS
  
• 21239 LIGO/Virgo G288732: Updated sky map from gravitational-wave data
  
• 21238 GRB 170607B: Fermi GBM detection
  
• 21237 GRB 170607A: ISON/Terskol optical observations
  
• 21236 LIGO/Virgo G288732: GWFUNC/NOWT observations of the skymap and follow-up of the Fermi/LAT candidate
  
• 21235 LIGO/Virgo G288732: Swift/UVOT follow up of the possible LAT counterpart
  
• 21234 LIGO/Virgo G288732: Swift/BAT data search
  
• 21233 LIGO/Virgo G288732: Swift-XRT follow up of the putative LAT counterpart
  
• 21232 GRB 170607B: AstroSat CZTI detection
  
• 21231 LIGO/Virgo G288732: INTEGRAL search for a prompt gamma-ray counterpart
  
• 21230 GRB 170607A: Swift-BAT refined analysis
  
• 21229 LIGO/Virgo G288732: SVOM/Mini-GWAC observations of the initial skymap
  
• 21228 LIGO/Virgo G288732: AGILE GRID Observations
  
• 21227 LIGO/Virgo G288732: Fermi-LAT detection of a weak candidate
  
• 21226 LIGO/Virgo G288732: IceCube neutrino observations update
  
• 21225 GRB 170607A: Correction on the possible host galaxy identification
  
• 21224 LIGO/Virgo G288732: AGILE MCAL Observations
  
• 21223 LIGO/Virgo G288732: ANTARES search
  
• 21222 LIGO/VIRGO G288732: Fermi GBM Observations
  
• 21221 LIGO/Virgo G288732: Identification of a GW Binary Merger Candidate
  
• 21220 GRB 170607A: Swift/UVOT Detection
  
• 21219 GRB 170607A: MASTER-Tavrida early OT observations
  
• 21218 GRB 170607A: Fermi GBM observation
  
• 21217 GRB 170607A: NOT optical afterglow detection
  
• 21216 GRB 170607A: Swift-XRT refined Analysis
  
• 21215 GRB 170607A: Enhanced Swift-XRT position
  
• 21214 GRB 170607A: Swift detection of a burst with a bright optical counterpart
  
• 21213 GRB 170526A: 15 GHz upper limits from AMI
  
• 21212 GRB 170524A: 15 GHz upper limits from AMI
  
• 21211 GRB 170519A: 15 GHz upper limits from AMI
  
• 21210 GRB 170531B: Zeiss-1000/CrAO optical observations
  
• 21209 GRB 170531B: WHT spectroscopy
  
• 21208 GRB 170519A: TShAO and AbAO optical observations
  
• 21207 GRB 170604A: Swift/UVOT Observations
  
• 21206 GRB 170519A: Mondy optical observations
  
• 21205 GRB 170529A: AstroSat CZTI detection
  
• 21204 GRB 170604A: RATIR Optical and NIR Observations
  
• 21203 GRB 170604A: AbAO optical observations
  
• 21202 Swift trigger 755873: Swift BAT and XRT refined analysis
  
• 21201 GRB 170522A: confirmation of the X-ray afterglow
  
• 21200 GROND observations of GRB170604A
  
• 21199 Swift Trigger 755873: MASTER Net optical observations
  
• 21198 GRB 170604A: Swift-XRT refined Analysis
  
• 21197 GRB 170604A: GTC spectroscopic redshift
  
• 21196 GRB 170604A: Enhanced Swift-XRT position
  
• 21195 GRB 170604A: Swift-BAT refined analysis
  
• 21194 Swift Trigger 755873: D50 optical limits
  
• 21193 Swift Trigger 755873: a possible GRB
  
• 21192 GRB 170604A: optical observations
  
• 21191 GRB 170604A: Swift detection of a burst
  
• 21190 Trigger 755848: Swift spurious trigger on Cen X-3
  
• 21189 GRB 170531B: ISON/Terskol optical observations
  
• 21188 GRB 170531B: Swift/UVOT Detection
  
• 21187 GRB 170531B: SMARTS optical/IR observations
  
• 21186 GRB 170531B: Swift-BAT refined analysis
  
• 21184 GRB 170531A: Swift/UVOT Upper Limits
  
• 21183 GRB 170531B: LCO observations
  
• 21182 GRB 170531B: Swift-XRT refined Analysis
  
• 21181 GRB 170531A: MASTER Net job
  
• 21180 GRB 170531A: Swift-XRT refined Analysis
  
• 21179 GRB 170531B: MASTER Net optical counterpart refind position and magnitude
  
• 21178 GROND observations of GRB 170531B
  
• 21177 GRB 170531B: Redshift from GTC/OSIRIS
  
• 21176 GRB 170531A: ePESSTO NTT observations
  
• 21175 GRB 170531B: Enhanced Swift-XRT position
  
• 21174 GRB 170531B: CrAO confirmation of the afterglow
  
• 21173 GRB 170531B: MASTER Net OT detection
  
• 21172 GRB 170531A: Swift/UVOT Observations
  
• 21171 GRB 170531B: Swift detection of a burst
  
• 21170 GRB 170531A: Swift detection of a burst
  
• 21169 GRB 170519A: CrAO optical observations
  
• 21168 GRB 170524B: Swift-UVOT/XRT Confirmation of Afterglow
  
• 21167 Konus-Wind observation of GRB 170529A
  
• 21166 Konus-Wind observation of GRB 170527A
  
• 21165 IPN Triangulation of GRB 170529A (long)
  
• 21164 IPN Triangulation of GRB 170527A
  
• 21163 GRB 170511A: AstroSat CZTI detection
  
• 21162 GRB 170519A: ISON/Multa optical observations
  
• 21161 GRB 170511A: Fermi GBM observation
  
• 21160 LIGO/Virgo G268556: optical observations and classification of Pan-STARRS1 transients
  
• 21159 LIGO/Virgo G268556: BSA radio observations at 110 MHz
  
• 21158 LIGO/Virgo G268556/GW170104: Konus-Wind observations
  
• 21157 GRB 170527A: Fermi GBM detection
  
• 21156 GRB 170526A, Swift-BAT refined analysis
  
• 21155 GRB 170526A: Swift/UVOT Upper Limits
  
• 21154 GRB 170526A: Swift-XRT refined Analysis
  
• 21153 LIGO/Virgo G268556: VERITAS Very-High-Energy Gamma-Ray Observations
  
• 21152 GRB 170524A: RATIR Optical and NIR Observations
  
• 21151 GRB 170526A: Enhanced Swift-XRT position
  
• 21150 GRB 170524B: Swift-XRT observations
  
• 21149 GRB 170526A: Swift detection of a burst
  
• 21148 Konus-Wind observation of GRB 170524B
  
• 21147 GRB 170524B: MASTER-OAFA observations
  
• 21146 GRB 170511A CALET Gamma-Ray Burst Monitor detection
  
• 21145 GRB 170524A: TSHAO and CrAO optical observations
  
• 21144 GRB 170524B: Swift ToO observations
  
• 21143 GRB 170524A: Swift-BAT refined analysis
  
• 21142 GRB 170524B: Swift detection of a burst
  
• 21141 GRB 170524A: Swift/UVOT Upper Limits
  
• 21140 GRB 170524A: D50 optical observation and limit
  
• 21139 GRB 170524A: Swift-XRT refined Analysis
  
• 21138 IPN Triangulation of GRB 170522A
  
• 21137 GRB 170511A: MAXI/GSC detection
  
• 21136 GRB 170524A: Enhanced Swift-XRT position
  
• 21135 GRB 170524A: Swift detection of a burst (or possible new SGR)
  
• 21134 GRB 170522A: LCO McDonald observations
  
• 21133 GRB 170522A: Swift-XRT observations
  
• 21132 GRB 170522A: Global MASTER-Net job
  
• 21131 Konus-Wind observation of GRB 170522B
  
• 21130 IPN Triangulation of GRB 170522B (long/intense)
  
• 21129 Konus-Wind observation of GRB 170522A
  
• 21128 GRB 170522A: Tiled Swift observations
  
• 21127 GRB 170522A: Fermi-LAT detection
  
• 21126 GRB 170522A: Fermi GBM detection
  
• 21125 GRB 170514A CALET Gamma-Ray Burst Monitor detection
  
• 21124 GRB 170519A: MITSuME Akeno Optical Observation
  
• 21123 GRB 170519A: Watcher optical observations
  
• 21122 GRB 170519A: Continued RATIR Optical and NIR Observations
  
• 21121 GRB 170519A: MITSuME Okayama Optical Observation
  
• 21120 GRB 170519A: NOT optical observations
  
• 21119 GRB 170519A: Redshift from GTC/OSIRIS
  
• 21118 GRB170519A, Swift-UVOT Detection
  
• 21117 GRB 170519A: BOOTES-5/JGT early optical detection
  
• 21116 LIGO/Virgo G284239: DLT40 follow-up observation
  
• 21115 GRB 170519A: KAIT Optical Observations
  
• 21114 GRB 170519A: Swift-XRT refined Analysis
  
• 21113 GRB 170519A: iTelescope T11 optical observations
  
• 21112 GRB 170519A: Swift-BAT refined analysis
  
• 21111 GRB 170519A: Weihai optical observations
  
• 21110 GRB 170510A: LCO Siding Springs early observations
  
• 21109 GRB 170519A: RATIR Optical and NIR Observations
  
• 21108 GRB 170519A: optical observations
  
• 21107 GRB 170519A: Enhanced Swift-XRT position
  
• 21106 GRB 170519A: Swift detection of a burst with an optical counterpart
  
• 21105 GRB 170510A CALET Gamma-Ray Burst Monitor detection
  
• 21104 LIGO/Virgo G277583: UH88/SNIFS classification of ATLAS and PS1 transients
  
• 21103 GRB 170510A: Swift-XRT afterglow detection
  
• 21102 GRB 170516A: Swift-BAT refined analysis
  
• 21101 GRB 170516A: Swift-XRT refined Analysis
  
• 21100 AXP CXOU J164710.2-455216: Fermi GBM observation
  
• 21099 GRB 170516A: Swift/UVOT Upper Limits
  
• 21098 GRB 170516A: Enhanced Swift-XRT position
  
• 21097 GRB 170516A: Swift detection of a burst
  
• 21096 Swift Trigger AXP CXOU J164710.2-455216: MASTER-OAFA observations
  
• 21095 Swift Trigger on AXP CXOU J164710.2-455216
  
• 21094 GRB 170514A: Fermi GBM detection
  
• 21093 GRB 170510A: AstroSat CZTI(Veto) detection
  
• 21092 Fermi GBM trigger 516459580/170514541 is not a GRB
  
• 21091 GRB 170510A: Global MASTER Net possible OT observations
  
• 21090 Konus-Wind observation of GRB 170510A
  
• 21089 LIGO/Virgo G275404 and G275659: SkyMapper Follow-up Observations
  
• 21088 LIGO/Virgo G284239: Konus-Wind observations
  
• 21087 GRB 170510A: LCO possible counterpart
  
• 21086 GRB 170510A: Swift-XRT observations
  
• 21085 GRB 170510A: Fermi GBM observation
  
• 21084 LIGO/Virgo G284239: H.E.S.S. very-high energy gamma-ray follow-up
  
• 21083 LIGO/Virgo G284239: MAXI/GSC observations
  
• 21082 GRB 170510A: Tiled Swift observations
  
• 21081 Duplicate submission removed.
  
• 21080 GRB 170510A: Fermi-LAT detection
  
• 21079 Swift Trigger 752193 is not a GRB
  
• 21078 LIGO/Virgo G284239: AstroSat CZTI upper limits
  
• 21077 Trigger 751928: Swift misidentification of Cen X-3
  
• 21076 GRB 170423A: TAROT Reunion observatory optical observations
  
• 21075 IceCube-170506A - IceCube update on a high-energy neutrino candidate event
  
• 21074 Swift XRT observations of GRB 170424A
  
• 21073 LIGO/Virgo G284239:SVOM/Mini-GWAC observations of the initial skymap
  
• 21072 LIGO/VIRGO G284239: Fermi GBM Upper Limits
  
• 21071 LIGO/Virgo G284239: HAWC follow-up
  
• 21070 LIGO/Virgo G284239: MASTER automatic follow up and synchronous observations
  
• 21069 LIGO/Virgo G284239: Fermi-LAT search for a high-energy gamma-ray counterpart
  
• 21068 LIGO/Virgo G284239: TZAC TAROT network observations with TRE/TCA/TCH
  
• 21067 GRB 170428A CALET Gamma-Ray Burst Monitor detection
  
• 21066 LIGO/Virgo: G284239 ANTARES search
  
• 21065 LIGO/Virgo G284239: Swift/BAT data search
  
• 21064 LIGO/Virgo G284239: AGILE GRID observations
  
• 21063 LIGO/Virgo G284239: INTEGRAL search for a prompt gamma-ray counterpart
  
• 21062 LIGO/Virgo G284239: AGILE MCAL Observations
  
• 21061 LIGO/Virgo G284239: IceCube neutrino observations
  
• 21060 LIGO/Virgo G284239: Identification of a GW Burst Candidate
  
• 21059 GRB 170428A: GTC spectroscopic redshift of candidate host galaxy
  
• 21058 GRB 170428A: 15 GHz upper limits from AMI
  
• 21057 Swift Trigger 748858: 15 GHz upper limits from AMI
  
• 21056 LIGO/Virgo G268556: Refined localization from CBC parameter estimation
  
• 21055 GRB 170428A: TNG optical observations
  
• 21054 Short GRB 170428A: MASTER-OAFA final reduction of the optical observations
  
• 21053 GRB 170428A: DCT Imaging
  
• 21052 GRB 170428A: TAROT La Silla observatory optical observations
  
• 21051 GRB 170428A: RATIR Afterglow Confirmation
  
• 21050 GRB 170428A: GROND detection of the afterglow
  
• 21049 GRB 170428A: Swift/UVOT Upper Limits
  
• 21048 GRB 170428A: Xinglong 2.16-m upper limit and host galaxy candidate
  
• 21047 GRB 170428A: Swift-XRT refined Analysis
  
• 21046 GRB 170428A: Swift-BAT refined analysis
  
• 21045 Konus-Wind observation of GRB 170428A
  
• 21044 GRB 170428A: MASTER-OAFA early optical observations
  
• 21043 Swift Trigger 750337 is probably a noise fluctuation
  
• 21042 GRB 170428A: Swift detection of a short burst
  
• 21041 Swift trigger 750096 - OT candidate
  
• 21040 GRB170426.95 MASTER-Net OT detection
  
• 21039 Swift Trigger 750096 is probably a noise fluctuation
  
• 21038 Swift Trigger 750044 is probably a noise fluctuation
  
• 21037 GRB 170424A: LCO Observations
  
• 21036 Konus-Wind observation of GRB 170424A
  
• 21035 GRB 170419A: Swift/UVOT Upper Limits
  
• 21034 GRB 170424A: Tiled Swift observations
  
• 21033 GRB 170424A: Fermi GBM detection
  
• 21032 GRB 170424A: Fermi-LAT detection
  
• 21031 GRB 170419A: LCO Observations
  
• 21030 GRB 170423A: Fermi GBM detection
  
• 21029 Swift Trigger 748858: AbAO and TSHAO optical observations
  
• 21028 Fermi GBM trigger 514436208/170421123 is not a GRB
  
• 21027 Swift Trigger 748858: TAROT La Silla observatory optical observations
  
• 21026 Swift Trigger 748858: RATIR Optical and NIR Observations
  
• 21025 GRB 170419B, Swift-BAT refined analysis
  
• 21024 GRB 170419B: Zadko observatory - Gingin optical observations
  
• 21023 GRB 170419A: Zadko observatory - Gingin optical observations
  
• 21022 Fermi GBM trigger 514379207/170420463 is not a GRB
  
• 21021 GRB 170419A: Swift-XRT refined Analysis
  
• 21020 GRB 170412A CALET Gamma-Ray Burst Monitor detection
  
• 21019 GRB 170419B: Fermi GBM observation
  
• 21018 GRB 170419A: Swift-BAT refined analysis
  
• 21017 Swift trigger 748858: Swift BAT, XRT, and UVOT refined analysis
  
• 21016 GRB 170419B: Swift detection of a burst
  
• 21015 GRB 170419A: Enhanced Swift-XRT position
  
• 21014 Swift Trigger 748858: MASTER-OAFA early optical observations
  
• 21013 GRB 170419A: Swift detection of a burst
  
• 21012 Swift Trigger 748858: Zadko observatory - Gingin optical observations
  
• 21011 Swift Trigger 748858: a possible GRB
  
• 21010 LIGO/Virgo G275404: DLT40 follow-up observation
  
• 21009 LIGO/Virgo G277583: DLT40 follow-up observation
  
• 21008 GRB 170409A: TAROT Reunion observatory optical observations
  
• 21007 Konus-Wind observation of GRB 170409A
  
• 21006 GRB 170402A: AstroSat CZTI detection
  
• 21005 GRB 170409A: Fermi GBM Observation
  
• 21004 GRB 170409A: Fermi-LAT detection
  
• 21003 GRB 170405A: SMARTS optical/IR afterglow observations
  
• 21002 GRB 170403B CALET Gamma-Ray Burst Monitor detection
  
• 21001 GRB 170317A: SAO RAS optical observations
  
• 21000 GRB170405A, Swift-UVOT Detection
  

After a while the above list gets too large and then the older entries are moved to the following lists.

Current Circulars 28000-present   20-06-20 to present
Circulars 27000-27999   20-02-06 to 20-06-20
Circulars 26000-26999   19-10-11 to 20-02-06
Circulars 25000-25999   19-07-06 to 19-10-11
Circulars 24000-24999   19-03-25 to 19-07-06
Circulars 23000-23999   18-07-21 to 19-03-25
Circulars 22000-22999   17-10-12 to 18-07-21
Circulars 21000-21999   17-04-07 to 17-10-12
Circulars 20000-20999   16-10-06 to 17-04-07
Circulars 19000-19999   16-02-07 to 16-10-06
Circulars 18000-18999   15-07-10 to 16-02-07
Circulars 17000-17999   14-10-31 to 15-07-09
Circulars 16000-16999   14-03-20 to 14-10-31
Circulars 15000-15999   13-07-10 to 14-03-19
Circulars 14000-14999   12-11-26 to 13-07-10
Circulars 13000-13999   12-02-29 to 12-11-25
Circulars 12900-12999   12-01-27 to 12-02-29
Circulars 12800-12899   12-01-03 to 12-01-27
Circulars 12700-12799   11-12-17 to 12-01-02
Circulars 12600-12699   11-11-29 to 11-12-16
Circulars 12500-12599   11-10-29 to 11-11-29
Circulars 12400-12499   11-09-28 to 11-10-29
Circulars 12300-12399   11-08-23 to 11-09-28
Circulars 12200-12299   11-07-26 to 11-08-22
Circulars 12100-12199   11-06-27 to 11-07-26
Circulars 12000-12099   11-05-04 to 11-06-27
Circulars 11900-11999   11-04-07 to 11-05-04
Circulars 11800-11899   11-03-18 to 11-04-07
Circulars 11700-11799   11-02-12 to 11-03-18
Circulars 11600-11699   11-01-25 to 11-02-12
Circulars 11500-11599   10-12-26 to 11-01-24
Circulars 11400-11499   10-11-13 to 10-12-26
Circulars 11300-11399   10-09-25 to 10-11-13
Circulars 11200-11299   10-09-03 to 10-09-25
Circulars 11100-11199   10-08-15 to 10-09-03
Circulars 11000-11099   10-07-27 to 10-08-15
Circulars 10900-10999   10-06-28 to 10-07-27
Circulars 10800-10899   10-05-26 to 10-06-28
Circulars 10700-10799   10-04-28 to 10-05-26
Circulars 10600-10699   10-04-15 to 10-04-28
Circulars 10500-10599   10-03-16 to 10-04-15
Circulars 10400-10499   10-02-11 to 10-03-16
Circulars 10300-10399   09-12-31 to 10-02-10
Circulars 10200-10299   09-11-28 to 09-12-30
Circulars 10100-10199   09-10-29 to 09-11-28
Circulars 10000-10099   09-10-08 to 09-10-29
Circulars 9900-9999   09-09-05 to 09-10-08
Circulars 9800-9899   09-08-14 to 09-09-05
Circulars 9700-9799   09-07-22 to 09-08-14
Circulars 9600-9699   09-07-01 to 09-07-22
Circulars 9500-9599   09-06-09 to 09-06-30
Circulars 9400-9499   09-05-19 to 09-06-09
Circulars 9300-9399   09-04-29 to 09-05-19
Circulars 9200-9299   09-04-23 to 09-04-29
Circulars 9100-9199   09-04-06 to 09-04-23
Circulars 9000-9099   09-03-15 to 09-04-06
Circulars 8900-8999   09-02-11 to 09-03-15
Circulars 8800-8899   09-01-12 to 09-02-10
Circulars 8700-8799   08-12-22 to 09-01-12
Circulars 8600-8699   08-12-03 to 08-12-22
Circulars 8500-8599   08-11-09 to 08-12-03
Circulars 8400-8499   08-10-24 to 08-11-08
Circulars 8300-8399   08-09-29 to 08-10-24
Circulars 8200-8299   08-09-08 to 08-09-29
Circulars 8100-8199   08-08-12 to 08-09-08
Circulars 8000-8099   08-07-23 to 08-08-12
Circulars 7900-7999   08-06-23 to 08-07-23
Circulars 7800-7899   08-06-04 to 08-06-23
Circulars 7700-7799   08-05-08 to 08-06-04
Circulars 7600-7699   08-04-13 to 08-05-08
Circulars 7500-7599   08-03-21 to 08-04-13
Circulars 7400-7499   08-03-10 to 08-03-21
Circulars 7300-7399   08-02-13 to 08-03-10
Circulars 7200-7299   08-01-21 to 08-02-13
Circulars 7100-7199   07-11-17 to 08-01-21
Circulars 7000-7099   07-10-25 to 07-11-17
Circulars 6900-6999   07-10-12 to 07-10-25
Circulars 6800-6899   07-09-19 to 07-10-12
Circulars 6700-6799   07-08-02 to 07-09-18
Circulars 6600-6699   07-07-05 to 07-08-02
Circulars 6500-6599   07-06-11 to 07-07-05
Circulars 6400-6499   07-05-09 to 07-06-11
Circulars 6300-6399   07-04-18 to 07-05-09
Circulars 6200-6299   07-03-12 to 07-04-18
Circulars 6100-6199   07-02-12 to 07-03-12
Circulars 6000-6099   07-01-07 to 07-02-12
Circulars 5900-5999   06-12-05 to 07-01-07
Circulars 5800-5899   06-11-10 to 06-12-05
Circulars 5700-5799   06-10-06 to 06-11-10
Circulars 5600-5699   06-09-23 to 06-10-06
Circulars 5500-5599   06-09-03 to 06-09-23
Circulars 5400-5499   06-08-05 to 06-09-03
Circulars 5300-5399   06-07-11 to 06-08-05
Circulars 5200-5299   06-06-10 to 06-07-11
Circulars 5100-5199   06-05-10 to 06-06-03
Circulars 5000-5099   06-04-24 to 06-05-10
Circulars 4900-4999   06-03-21 to 06-04-24
Circulars 4800-4899   06-02-20 to 06-03-21
Circulars 4700-4799   06-02-06 to 06-02-20
Circulars 4600-4699   06-01-25 to 06-02-06
Circulars 4500-4599   06-01-13 to 06-01-25
Circulars 4400-4499   05-12-27 to 06-01-13
Circulars 4300-4399   05-11-22 to 05-12-27
Circulars 4200-4299   05-11-06 to 05-11-22
Circulars 4100-4199   05-10-16 to 05-11-06
Circulars 4000-4099   05-09-19 to 05-10-16
Circulars 3900-3999   05-08-28 to 05-09-18
Circulars 3800-3899   05-08-14 to 05-08-28
Circulars 3700-3799   05-07-29 to 05-08-14
Circulars 3600-3699   05-07-13 to 05-07-29
Circulars 3500-3599   05-05-28 to 05-07-13
Circulars 3400-3499   05-05-10 to 05-05-28
Circulars 3300-3399   05-04-21 to 05-05-10
Circulars 3200-3299   05-04-09 to 05-04-21
Circulars 3100-3199   05-03-16 to 05-04-09
Circulars 3000-3099   05-01-30 to 05-03-16
Circulars 2900-2999   04-12-23 to 05-01-28
Circulars 2800-2899   04-10-13 to 04-12-23
Circulars 2700-2799   04-09-09 to 04-10-13
Circulars 2600-2699   04-05-14 to 04-09-09
Circulars 2500-2599   03-12-22 to 04-05-14
Circulars 2400-2499   03-09-25 to 03-12-21
Circulars 2300-2399   03-07-15 to 03-09-24
Circulars 2200-2299   03-05-03 to 03-07-15
Circulars 2100-2199   03-04-05 to 03-05-03
Circulars 2000-2099   03-03-27 to 03-04-05
Circulars 1900-1999   03-02-27 to 03-03-29
Circulars 1800-1899   03-01-11 to 03-02-27
Circulars 1700-1799   02-11-20 to 03-01-11
Circulars 1600-1699   02-10-07 to 02-11-19
Circulars 1500-1599   02-08-16 to 02-10-07
Circulars 1400-1499   02-05-31 to 02-08-16
Circulars 1300-1399   02-03-22 to 02-05-31
Circulars 1200-1299   01-12-13 to 02-03-12
Circulars 1100-1199   01-09-22 to 01-12-13
Circulars 1000-1099   01-03-02 to 01-09-22
Circulars 900-999   00-12-14 to 01-03-01
Circulars 800-899   00-09-27 to 00-12-14
Circulars 700-799   00-06-13 to 00-09-27
Circulars 600-699   00-03-08 to 00-06-13
Circulars 500-599   99-12-16 to 00-03-08
Circulars 400-499   99-08-10 to 99-12-16
Circulars 300-399   99-05-08 to 99-08-10
Circulars 199-299   99-01-23 to 99-05-07
Circulars 100-198   98-06-13 to 99-01-22
Circulars neg4-099   97-02-?? to 98-06-13

Tar file of all the circulars (as of a couple minutes after every midnight US EastCoast local time).
This tarfile is a convenient way of getting all the Circulars if you want to 'mine' them for some particular need.
(If you are willing to share, I would appreciate getting a copy (for my own private GCN_Administrater use)
of whatever statistical analyses you derive from your mining.)