TITLE: GCN CIRCULAR NUMBER: 10601 SUBJECT: GRB 100414A: Swift-XRT detection of a possible X-ray afterglow DATE: 10/04/16 20:02:44 GMT FROM: Kim Page at U.of Leicester K.L. Page (U. Leicester), J. L. Racusin (NASA/GSFC), J.A. Kennea (PSU) and J.K. Cannizzo (NASA/UMBC) report on behalf of the Swift-XRT team: Following a Target of Opportunity request, Swift started observing the field of the Fermi GBM- and LAT-detected GRB 100414A about 48 hours after the trigger (GCN Circs. 10594, 10595). In 1.4 ks of data there is an uncatalogued source detected within the XRT field of view, at a position of RA, Dec = 192.11199, 8.69172, which is equivalent to RA (J2000): 12 48 26.88 Dec (J2000): +08 41 30.2 with an uncertainty of 3.8 arcsec (radius, 90% containment). The source is at a count rate of 0.022 +/- 0.004 count s^-1 (0.3-10 keV), corresponding to an observed flux of ~1.31x10^-12 erg cm^-2 s^-1; however, with the limited data collected so far, it is not possible to determine whether this source is fading.