//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 19471 SUBJECT: GRB 160525C: CALET Gamma-Ray Burst Monitor detection DATE: 16/05/28 23:39:39 GMT FROM: Takanori Sakamoto at AGU T. Sakamoto, A. Yoshida, Y. Kawakubo, M. Moriyama, Y. Yamada (AGU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA), I. Takahashi (IPMU), Y. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), W. Ishizaki (ICRR), M. L. Cherry (LSU), S. Ricciarini (U of Florence) P. S. Marrocchesi (U of Siena) and the CALET collaboration: GRB 160525C (Konus-Wind trigger time on 10:54:28.0 UT) triggered the CALET Gamma-Ray Burst Monitor (CGBM) at 10:54:20.25 on 25 May 2016. The burst signal was seen by all CGBM instruments. The light curve of the SGM shows a double peak structure starting at T0+4 sec, peaking at T0+5 sec, and ending at T0+6.5 sec sec. The T90 duration measured by the SGM data is 2.4 +- 0.3 sec (40-230 keV). The light curve is available at http://cgbm.calet.jp/cgbm_trigger/flight/1148208864/index.html The CGBM data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 19520 SUBJECT: GRB 160525C: Astrosat CZTI detection DATE: 16/06/10 11:22:33 GMT FROM: Varun Bhalerao at IUCAA V. Bhalerao (IUCAA), V. Kumar (IUCAA), D. Bhattacharya (IUCAA), A. R. Rao (TIFR), S. Vadawale (PRL) report on behalf of the Astrosat CZTI collaboration: Analysis of Astrosat data showed the detection of GRB 160525C (Sakamoto et al., GCN 19471; Konus Wind trigger time 10:54:28.0 UT) in CZTI data. The source was clearly detected in the 40-240 keV energy range. The light curve shows a complex structure, with the strongest peak at UT 10:54:23 and a peak count rate of 640 counts/sec above the background (four quadrants summed together), with a total of 2796 counts. The local mean background count rate of 86.2 is counts/sec. Using cumulative rates, we measure a T90 of 5.1 sec. CZTI GRB detections are reported regularly on the payload site at http://astrosat.iucaa.in/czti/?q=node/9 . CZTI is built by a TIFR-led consortium of institutes across India, including VSSC, ISAC, IUCAA, SAC and PRL. The Indian Space Research Organisation funded, managed and facilitated the project.