TITLE: GCN CIRCULAR NUMBER: 39068 SUBJECT: The EP-WXT trigger 01709131085 is likely a flaring star DATE: 25/01/29 05:37:57 GMT FROM: EP Team at NAOC/CAS ep_ta@bao.ac.cn

D. Y. Li (NAOC, CAS), Y.-H. I. Yin (NJU), W. M. Yuan (NAOC, CAS) report on behalf of the Einstein Probe team:

The EP-WXT trigger (ID: 01709131085) on 2025-01-29 04:49:22 (UTC) is likely a stellar flare associated with a high proper motion star RX J0448.7+1003. The estimated flux of the flare is around 2.0 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 7.1 x 10^30 erg/s.

Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with onboard X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).

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