GCN Circular 37593
Subject
EP trigger ID 01709059262: the X-ray transient is likely a stellar flare event
Date
2024-09-24T12:23:21Z (2 months ago)
From
EP Team at NAOC/CAS <ep_ta@bao.ac.cn>
Via
Web form
M. J. Liu, H. Y. Liu, Z.X. Ling (NAOC, CAS), Y. J. Zhang (THU), J. H. Wu (GZHU), Y. L. Hua (PMO), W. F. Wen (SZTU), H. L.Peng (NNU)
The Follow-up X-ray Telescope (FXT) on board the Einstein Probe (EP) mission performed an autonomous observation on the X-ray transient detected by EP-WXT (trigger ID 01709059262). The observation started at 2024-09-24T18:32:47 (UTC), about 3 minutes after the EP-WXT trigger time. The FXT onboard data processing system detected a source at R.A. = 289.3937, DEC = 46.1281 (J2000) with an uncertainty of about 20 arcsec (radius, 90% C.L. statistical and systematic), consistent with the position of the WXT transient within the uncertainties. The position of the FXT source is associated with the star 2MASS J18351416+2435115, suggesting that this X-ray transient is likely a stellar flare event.
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).