TITLE:   GCN CIRCULAR
NUMBER:  43597
SUBJECT: GRB 260127B: GECAM-B observation of a short burst
DATE:    26/02/02 03:20:39 GMT
FROM:    renyz16607@163.com

Yang-Zhao Ren, Chen-Wei Wang, Chao Zheng, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:

GECAM-B was triggered in-flight by GRB 260127B, at 2026-01-27T20:02:32.650 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM Team, GCN #43533), and AstroSat/CZTI (Arya et al., GCN #43576).

According to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of  multiple pulses with a duration (T90) of 0.13 +0.11/-0.02 s.

The GECAM-B light curve can be found here:
https://www.bursthub.cn//admin/static/gecambgrb260127B.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).