GCN Circular 38248
Subject
EP241113a: Swift XRT weak detection
Date
2024-11-16T03:29:12Z (18 days ago)
From
P.G. Jonker at Radboud University <p.jonker@astro.ru.nl>
Via
Web form
P.G. Jonker (Radboud Univ.), D. Malesani (DAWN/NBI and Radboud Univ.) and A. Levan (Radboud Univ. & Warwick Univ.) report on behalf of a larger collaboration:
We observed the field of EP241113a (Liu et al., GCN 38221) with Swift/XRT starting on 2024-11-15 at 21:10:03 (UTC) for ~3325 seconds. We detect a faint X-ray source at an astrometrically corrected position RA, Dec = 131.9998, 52.3819 (=08 47 59.95, +52 22 55.0) with an error radius of 14.2′′ (90% confidence) using the XRT UK build products website (Goad et al. 2007, A&A, 476, 1401; Evans et al. 2009, MNRAS, 397, 1177). This position is consistent with that of the Einstein Probe Follow-up X-ray Telescope position (Liu et al., GCN 38221). This position is also consistent with the object reported by Rossi et al. (GCN 38233), but also with the galaxy 2MASX J08480182+5222544 with a measured spectroscopic redshift of z=0.115.
An approximate X-ray flux of 1E-13 erg cm^-2 s^-1 (0.3-10 keV) was derived using a powerlaw with an index fixed to 2 and Galactic absorption fixed to 3E20 cm^-2 using C-stat.