TITLE:   GCN CIRCULAR
NUMBER:  44123
SUBJECT: The EP-WXT trigger 01709259173 is likely a flaring star
DATE:    26/03/27 04:19:32 GMT
FROM:    EP Team at NAOC/CAS <ep_ta@bao.ac.cn>

Z. H. Yang(IHEP), C. Y. Dai (NJU), Q. C. Zhao(IHEP), W. F. Wen(SZTU) on behalf of the Einstein Probe (EP) team: 

The EP-WXT trigger 01709259173 at the time of 2026-03-26T22:01:59, is likely a stellar flare associated with UCAC4 220-087219. The estimated flux of the flare is around 1.92e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4e+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).