TITLE: GCN CIRCULAR NUMBER: 6095 SUBJECT: GRB 070209: Swift XRT analysis DATE: 07/02/10 19:49:44 GMT FROM: Matteo Perri at ISAC/ASDC G. Stratta, M. Perri, M. L. Conciatore (ASDC), D. N. Burrows (PSU) and G. Sato (GSFC/ISAS) report on behalf of the Swift/XRT team: We have analysed the first 12 orbits of Swift XRT data on the BAT GRB 070209 (Sato et al., GCN Circ. 6086). Data in Photon Counting mode started at 03:35:10 UT, 89 s after the BAT trigger. With an exposure time of 26.9 ks we did not find X-ray sources within the BAT refined error circle (Sakamoto et al., GCN Circ. 6087). We note that the following X-ray sources are detected in the 0.7-10 keV band in the proximity of the BAT error circle: Source #1: CR = (1.1+/-0.3)e-3 cts/s RA/Dec(J2000)=03 04 57.3 -47 19 35.6 Source #2: CR = (7.5+/-2.2)e-4 cts/s RA/Dec(J2000)=03 05 04.9 -47 18 42.8 Source #3: CR = (1.4+/-0.3)e-3 cts/s RA/Dec(J2000)=03 04 39.1 -47 27 57.3 The estimated uncertainty of the positions of the three sources is about 5 arcsec (90% containment). Source #1 lies 3.1 arcmin from the refined BAT position, just outside the error circle. We note that this source may be fading, but due to the small number of counts we are unable to determine clearly if the source is decaying. A Swift follow-up observation will be performed in a few days to confirm whether source #1 is fading or not. This circular is an official product of the Swift XRT Team.