TITLE: GCN CIRCULAR NUMBER: 9315 SUBJECT: Refined analysis of ICSP VLF observation of SGR J1550-5418 bursts on 22nd January, 2009 DATE: 09/05/01 12:42:06 GMT FROM: Sandip K. Chakrabarti at S.N. Bose Nat. Centre for Basic Sci. Refined analysis of ICSP VLF observation of SGR J1550-5418 bursts on 22nd January, 2009 Sandip K. Chakrabarti (S. N. Bose Centre and ICSP), Sushanta K. Mondal (ICSP), Sudipta Sasmal (ICSP) and D. Bhowmick (ICSP) In continuation of our previous reports (GCN #8881 and GCN #8900) we present our refined analysis of VLF observations by ICSP. We identified as many as 73 satellite events (e.g., GCNs 8833, 8835, 8837, 8838) which could be associated with ionospheric features observed by ICSP VLF receiver at Kolkata. Some of these events last only tens of seconds which others last longer. Very often successive events occur even before the earlier one decayed, making identifications more difficult. Two images (4450.jpg and 8950.jpg) of the comparison with satellite detections are in the http://www.bose.res.in/~chakraba/axpsgr3.html. This message may be cited.