GRB 200716C: CALET Gamma-Ray Burst Monitor detection
Abstract
The bright GRB 200716C (Swift detection: Ukwatta et al., GCN Circ. 28124, Barthelmy et al., GCN Circ. 28136; Fermi-LAT detection: Ohno et al., GCN Circ. 28130; Fermi GBM detection: Veres and Meegan, GCN Circ. 28135; https://gcn.gsfc.nasa.gov/other/200716C.gcn3) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 22:57:41.346 UTC on 16 July 2020. The burst signal was seen by all CGBM detectors. Because of a problem in one of the ground alert processing script, the GCN notice was not distributed automatically for this event. The burst light curve shows two narrow pulses followed by a weak tail. The emission starts at T-0.1 sec and ends at T+6.8 sec. The T90 and T50 durations measured by the SGM data are 5.3 +- 1.1 sec and 1.9 +- 0.1 sec (40-1000 keV), respectively. The ground processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1278975378/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- July 2020
- Bibcode:
- 2020GCN.28139....1T