GCN Circular 45384
Subject
The EP-WXT trigger 01709280562 is likely a flaring star
Date
2026-08-15T01:32:54Z (3 days ago)
From
EP Team at NAOC/CAS <ep_ta@bao.ac.cn>
Via
Web form
Y.-H. I. Yin (HKU), Z.-C. Zou (NJU), J. H. Wu (GZHU), Y. Q. Zhao (PRIC, USTC), Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team:
The EP-WXT trigger 01709280562 at the time of 2026-08-14T19:52:10, is likely a stellar flare associated with UPM J0042-5444. The estimated flux of the flare is around 1.0 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.3 x 10^31 erg/s.
Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).