TITLE: GCN CIRCULAR NUMBER: 15666 SUBJECT: GRB 140103A: Swift-XRT refined analysis DATE: 14/01/03 15:17:05 GMT FROM: Vanessa Mangano at PSU V. Mangano (PSU) reports on behalf of the Swift-XRT team: We have analysed 5.1 ks of XRT data for GRB 140103A (Mangano et al. GCN Circ. 15656), from 172 s to 8.5 ks after the BAT trigger. The data comprise 2.6 ks in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. A faint X-ray source at the level of 0.05 counts/s is detected during PC mode observation. The refined XRT position is RA, Dec = 232.08747, +37.75917 which is equivalent to: RA (J2000): 15 28 20.99 Dec(J2000): +37 45 33.0 with an uncertainty of 3.6 arcsec (radius, 90% confidence). The 2.5 ks PC observation show a small scale flare and WT mode data are background dominated due to bright earth contamination and highly scattered. At present time we cannot asses if the source is fading. Further observations have been scheduled. This circular is an official product of the Swift-XRT team.