GCN Circular 41764
Subject
The EP-WXT trigger 01709240674 is triggered by the known source SS Cyg
Date
2025-09-09T10:10:04Z (4 days ago)
From
EP Team at NAOC/CAS <ep_ta@bao.ac.cn>
Via
Web form
M. J. Liu, M. H. Zhang (NAO, CAS), Y.-H. I. Yin (NJU), X. X. Sun, T. Y. Liu, H. Y. Ren, H. Sun (NAO, CAS) on behalf of the Einstein Probe (EP) team:
The EP-WXT trigger 01709240674 at the time of 2025-09-09T09:16:57 is associated with the cataclysmic binary SS Cyg. The estimated flux of the flare is around 2.6 x 10^(-10) erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4.0 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).