TITLE:   GCN CIRCULAR
NUMBER:  40457
SUBJECT: GRB 250511A: GECAM-A detection of a short burst
DATE:    25/05/14 04:36:21 GMT
FROM:    Chenwei Wang at IHEP <cwwang@ihep.ac.cn>

Chen-Wei Wang, Shao-Lin Xiong, Yue Huang (IHEP) report on behalf of GECAM team:

GECAM-A detected a short burst GRB 250511A at 2025-05-11T00:52:17 UTC (denoted as T0).

According to the GECAM-A light curves in about 40-6000 keV, this burst mainly consists of a single pulse with a duration (T90) of 1.9 +0.7/-0.7 s.

The GECAM-A light curve can be found here:
https://www.bursthub.cn//admin/static/gecamgrb250511A.png

Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) mission originally consists of two micro-satellites (GECAM-A and GECAM-B) launched in Dec. 2020. As the third member of GECAM constellation, GECAM-C was launched onboard SATech-01 experimental satellite in July 2022. GECAM mission is funded by the Chinese Academy of Sciences (CAS).