GRB 240122B: CALET Gamma-Ray Burst Monitor detection
Abstract
The long GRB 240122B (Glowbug gamma-ray detection: Cheung et al., GCN Circ. 35606) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 19:16:26.96 UTC on 22 January 2024 (http://cgbm.calet.jp/cgbm_trigger/flight/1389985993/). The burst signal was seen by HXM2 and SGM. The burst light curve shows a double-peaked structure that starts at T-57.2 sec, peaks at T+9.0 sec, and ends at T+17.1 sec. The T90 and T50 durations measured by the SGM data are 69.2 +/- 1.9 sec and 32.2 +/- 19.7 sec (40-1000 keV), respectively. The ground-processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1389985993/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:
- January 2024
- Bibcode:
- 2024GCN.35623....1R