TITLE:   GCN CIRCULAR
NUMBER:  21927
SUBJECT: LIGO/Virgo G298048: MWA Observations of Error Region
DATE:    17/09/25 22:30:34 GMT
FROM:    David Kaplan at UW-Milwaukee  <kaplan@uwm.edu>

D. Kaplan (UWM), I. Brown (UWM), M. Sokolowski (Curtin University), R. Wayth (Curtin University), T. Murphy (University of Sydney), D. Dobie (University of Sydney), C. Lynch (University of Sydney), and K. Bannister (CSIRO) on behalf of the MWA collaboration.

We have observed a 20 x 20 deg field-of-view centered on the  LIGO/Virgo G298048 localization region  (LVC GCN #21513) with the Murchison Widefield Array.  We observed 2017-08-18 07:07 UT to 2017-08-18 09:35 UT at a central frequency of 185 MHz and with a bandwidth of 30 MHz.  No emission was detected at the position of NGC 4993.  The RMS noise was 17 mJy/beam (note that the array is in the process of being reconfigured, so only 5/16 of the tiles are operational).   Analysis of subsequent epochs with the reconfigured array is underway.

We thank the MWA Operations team for supporting these observations.