GRB 221115B: CALET Gamma-Ray Burst Monitor detection
Abstract
The long GRB 221115B (Swift/BAT-GUANO arcminute localization: DeLaunay et al., GCN Circ. 32941) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 09:46:15.63 UTC on 15 November 2022 (http://cgbm.calet.jp/cgbm_trigger/flight/1352540756/index.html). The burst signal was seen by all CGBM detectors. The burst light curve shows two pulses. The first faint pulse is around T-12 s, and the second main pulse starts at T+0.0 sec, peaks at T+0.6, sec, and ends at T+2.4 sec. The T90 and T50 durations measured by the SGM data are 2.1 +/- 0.2 sec and 0.9 +/- 0.3 sec (40-1000 keV), respectively. The ground processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1352540756/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- November 2022
- Bibcode:
- 2022GCN.32948....1Y