TITLE: GCN CIRCULAR NUMBER: 16832 SUBJECT: GRB 140919A: Swift-XRT observations DATE: 14/09/19 16:36:48 GMT FROM: Phil Evans at U of Leicester M. Perri (ASDC), G. Tagliaferri (INAF-OAB), P.A. Evans (U. Leicester), J.P. Osborne (U. Leicester), D.N. Burrows (PSU) and J.A. Kennea (PSU) report on behalf of the Swift-XRT team: The XRT began observing the field of GRB 140919A at 16:07:15.9 UT, 3120.4 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 221.53822, -32.17586 which is equivalent to: RA(J2000) = 14h 46m 09.17s Dec(J2000) = -32d 10' 33.1" with an uncertainty of 3.9 arcseconds (radius, 90% containment). This location is 95 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 7.65 x 10^20 cm^-2 (Willingale et al. 2013).