[vsnet-grb-info 18461] GRB 160910A: CALET Gamma-Ray Burst Monitor detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  19909
SUBJECT: GRB 160910A: CALET Gamma-Ray Burst Monitor detection
DATE:    16/09/12 03:42:09 GMT
FROM:    Takanori Sakamoto at AGU  <tsakamoto at phys.aoyama.ac.jp>

Y. Kawakubo, A. Yoshida, T. Sakamoto, 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:

The long-duration GRB 160910A (Veres et al., GCN Circ. 19901; Racusin et al.,
GCN Circ. 19902;  INTEGRAL-SPI/ACS trigger #7560) triggered the CALET
Gamma-ray Burst Monitor (CGBM) at 17:19:41.25 on 10 September 2016.
The burst signal was seen by all CGBM instruments.

The light curve of the SGM shows an initial weak peak followed by a main
bright peak.  The weak initial peak starts at T0, peaks at T+3 sec and ends
at T+4 sec.  The main bright peak starts at T+4 sec, peaks at T+6 sec and
ends at T+20 sec.  Several overlapping pulses are evident in the main peak.
The T90 duration measured by the SGM data is 20.7 +- 1.5 sec (40-1000 keV).

The light curve is available at

http://cgbm.calet.jp/cgbm_trigger/flight/1157563166/

The CALET data used in this analysis are provided by the Waseda
CALET Operation Center located at the Waseda University.