GRB 230402A: CALET Gamma-Ray Burst Monitor detection
Abstract
The long GRB 230402A (Fermi GBM Final Real-time Localization: Fermi GBM team, GCN Circ. 33553; AGILE detection: Casentini et al., GCN Circ 33555; AstroSat CZTI detection: Navaneeth et al., GCN Circ. 33562) triggered the CALET Gamma-ray Burst Monitor (CGBM)at 07:32:38.72 UTC on 2 April 2023 (http://cgbm.calet.jp/cgbm_trigger/flight/1364455761/). The burst signal was seen by only the SGM detector. The burst light curve shows a single pulse that starts at T-3.2 sec and ends at T+4.8 sec. The T90 and T50 durations measured by the SGM data are 7.0 +/- 1.0 sec and 4.0 +/- 1.0 sec (40-1000 keV), respectively. The ground-processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1364455761/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at Waseda University.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- April 2023
- Bibcode:
- 2023GCN.33563....1C