GCN Circular 16811
C. Pagani, K.L. Page and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: We have analysed 5.0 ks of XRT data for the Swift/BAT-detected burst: GRB 140909A, from 44.0 ks to 56.5 ks after the Swift/BAT trigger. The data are entirely in Photon Counting (PC) mode. An X-ray source is detected within the Swift/BAT error circle. Using 1945 s of PC mode data and 1 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 193.61156, +63.51677 which is equivalent to: RA (J2000): 12h 54m 26.78s Dec(J2000): +63d 31' 00.4" with an uncertainty of 7.2 arcsec (radius, 90% confidence). This position is 92 arcsec from the Swift/BAT position. The source has a mean count rate of 6.9e-03 ct/sec; we cannot determine at the present time whether it is fading. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020417. This circular is an official product of the Swift-XRT team.