GCN Circular 45635
Subject
The EP-WXT trigger 01709318279 is likely a flaring star
Date
2026-09-18T16:13:55Z (3 days ago)
From
EP Team at NAOC/CAS <ep_ta@bao.ac.cn>
Via
Web form
B. Zhang, J. P. Feng (USTC), Z.-C. Zou (NJU), G. Y. Zhao (QTNU), W. D. Zhang (NAO,CAS) on behalf of the Einstein Probe (EP) team:
The EP-WXT trigger 01709318279 at the time of 2026-09-18T14:49:06, is likely a stellar flare associated with 1RXS J024853.5-340428 (spectroscopic binary). The estimated flux of the flare is around 6 x 10^(-11) erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.3 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).