TITLE: GCN CIRCULAR NUMBER: 14651 SUBJECT: GRB 130514B: Swift-XRT Observations DATE: 13/05/15 02:12:20 GMT FROM: Binbin Zhang at PSU B.-B. Zhang (PSU), Dirk Grupe (PSU) and D. Malesani (DARK/NBI) report on behalf of the Swift-XRT team: We have analyzed 2.0 ks of XRT data for the INTEGRAL-detected burst: GRB 130514B, from 5.0 ks to 10.8 ks after the INTEGRAL trigger. The data are entirely in Photon Counting (PC) mode. An X-ray source is detected within the INTEGRAL error circle. Using 1475 s of PC mode data and 2 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 = 147.60859, -18.96517 which is equivalent to: RA (J2000): 09h 50m 26.06s Dec(J2000): -18d 57' 54.6" with an uncertainty of 1.8 arc sec (radius, 90% confidence). This position is 37 arcsec from the INTEGRAL position. The X-ray source was detect with a peak count rate of 0.31 count/s at ~ T0+5359s, where T0= 2013 May 14 at 13:26:29.510 UT, then faded to a count rate of 0.11 count/s at T0+11 ks. A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.17 (+0.31, -0.30). The best-fitting absorption column is 3.6 (+1.2, -1.1) x 10^21 cm^-2, in excess of the Galactic value of 3.6 x 10^20 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.9 x 10^-11 (7.2 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 3.6 (+1.2, -1.1) x 10^21 cm^-2 Galactic foreground: 3.6 x 10^20 cm^-2 Excess significance: 5.0 sigma Photon index: 2.17 (+0.31, -0.30) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020275. This circular is an official product of the Swift-XRT team.