TITLE:   GCN CIRCULAR
NUMBER:  22208
SUBJECT: GRB 171106A CALET Gamma-Ray Burst Monitor detection
DATE:    17/12/08 00:23:47 GMT
FROM:    Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>

M. Moriyama, A. Yoshida, T. Sakamoto, Y. Kawakubo, Y. Yamada,
A. Tezuka, S. Matsukawa (AGU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN),
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), A. V. Penacchioni, P. S. Marrocchesi (U of Siena)
and the CALET collaboration:

The long-duration GRB 171106A (Fermi-GBM trigger #531662214,
INTEGRAL SPI-ACS trigger #7958, Konus-Wind trigger time on 11:56:50.118) triggered
the CALET Gamma-ray Burst Monitor (CGBM) at 11:56:48.57 on 6 November 2017.
The burst signal was seen by the all CGBM instruments.

The light curve of the SGM shows several peaks.  The emission starts at T+2 sec,
peaks at T+4 sec and ends at T+13.5 sec.  The weak 2nd and 3rd peaks are visible at
T+7 sec and T+12 sec.  The T90 duration measured by the SGM data is
1.8 +- 0.2 sec (40-1000 keV).

The light curve is available at

http://yoshidalab.mydns.jp/cgbm_trigger/flight/1194004517/

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