TITLE: GCN CIRCULAR NUMBER: 40018 SUBJECT: The EP-WXT trigger 01709133862 is a flaring star DATE: 25/04/03 07:02:53 GMT FROM: EP Team at NAOC/CAS ep_ta@bao.ac.cn

R.-Z. Li (YNAO, CAS), H. Q. Cheng (NAO, CAS), Q. C. Zhao, Z. H. Yang (IHEP, CAS), Y. Liu (NAO, CAS) report on behalf of the Einstein Probe team:

The EP-WXT triggered event 01709133862 at the time of 2025-04-02 17:38:19, which is a stellar flare associated with the Rotating Variable star ASAS J145837-3915.1. 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 1.6 x 10^32 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).

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