GRB 240303B: CALET Gamma-Ray Burst Monitor detection
Abstract
The long GRB 240303B (Fermi GBM Final Real-time Localization: Fermi GBM team, GCN Circ. 35850; BALROG localization: Preis et al., GCN Circ 35851; INTEGRAL SPI-ACS: Trigger 10612; GECAM: Trigger 301) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 12:18:48.35 UTC on 3 March 2024 (http://cgbm.calet.jp/cgbm_trigger/flight/1393503263/). The burst signal was seen by all CGBM detectors. The burst light curve shows a multi-peaked structure that starts at T+2.7 sec, peaks at T+7.2 sec, and ends at T+11.2 sec. The T90 and T50 durations measured by the SGM data are 5.5 +/- 0.4 sec and 2.0 +/- 0.1 sec (40-1000 keV), respectively. The ground-processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1393503263/index.html 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:
- March 2024
- Bibcode:
- 2024GCN.35857....1N