GCN Circular 45493
Subject
EP260830a: EP-FXT follow-up observation
Event
Date
2026-09-02T02:14:40Z (a day ago)
From
EP Team at NAOC/CAS <ep_ta@bao.ac.cn>
Via
Web form
X. Mao, Q. H. Lao (NAO, CAS), Y. F. Liang, J. Y. Liu (PMO), Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team:
EP-FXT performed a follow-up observation of EP260830a (Mao et al., GCN 45280; Segura et al., GCN 45481) starting at 2026-09-01T17:56:36 (UTC), approximately 50 hours after the WXT detection. With an exposure time of 5 ks, no significant X-ray source was detected within the 2.4 arcmin radius of the EP-WXT position. The derived 0.5-10 keV upper limit is about 8.8e-14 erg cm^-2 s^-1.
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).