GRB 240402C: CALET Gamma-Ray Burst Monitor detection
Abstract
The long GRB 240402C (GRBAlpha detection: Dafcikova et al., GCN Circ. 36036; Glowbug gamma-ray detection: Cheung et al., GCN Circ. 36038) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 05:30:42.49 UTC on 2 April 2024 (http://cgbm.calet.jp/cgbm_trigger/flight/1396070722/index.html). The burst signal was seen by all CGBM detectors. The burst light curve shows a double-peaked structure that starts at T-62.6 sec, peaks at T+1.6 sec, and ends at T+21.1 sec. The T90 and T50 durations measured by the SGM data are 76.5 +/- 2.6 sec and 53.5 +/- 1.0 sec (40-1000 keV), respectively. The ground-processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1396070722/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:
- April 2024
- Bibcode:
- 2024GCN.36046....1A