GRB 240225C: CALET Gamma-Ray Burst Monitor detection
Abstract
The long GRB 240225C (INTEGRAL SPI ACS Trigger: Trigger Num. 10590; IPN RAW NOTICE (KONUS/Wind); AstroSat CZTI detection: Joshi et al., GCN Circ. 35799; GRBAlpha detection: Ripa et al., GCN Circ. 35802) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 05:19:32.73 UTC on 25 February 2024 (http://cgbm.calet.jp/cgbm_trigger/flight/1392873321/index.html). The burst signal was seen by all CGBM detectors. The burst light curve shows a single pulse that starts at T+2.6 sec, peaks at T+4.2 sec, and ends at T+22.6 sec. The T90 and T50 durations measured by the SGM data are 13.1 +/- 3.4 sec and 4.6 +/- 0.4 sec (40-1000 keV), respectively. The ground-processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1392873321/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:
- February 2024
- Bibcode:
- 2024GCN.35806....1S