GCN Circular 5862
B. Sbarufatti (INAF IASF-Pa), V. Mangano (INAF IASF-Pa), C. Guidorzi (INAF OAB) and D. N. Burrows, report on behalf of the Swift XRT team: We have analyzed the first 3 orbits of Swift-XRT data obtained for GRB 061126 (trigger=240766, GCN 5854). The data consist of 240 s in Windowed Timing (WT) mode, starting 1603 seconds after the trigger followed by 6 ks in Photon Counting (PC) mode. Using the PC data we obtain a refined position of: RA(J2000) = 05h 46m 24.5s Dec(J2000)= +64d 12m 37.6s with an estimated uncertainty radius of 3.5 arcsec (90% containment). This location is 1.62 arcsec from the first XRT position (GCN 5855) and 0.95 arcsec from the UVOT position (GCN 5856). The light-curve shows a power-law decay with slope alpha=1.3 +/- 0.03 up to the end of the third orbit. The PC spectrum can be modeled with an absorbed power-law of photon index Gamma = 2.01 +/- 0.09 and NH= (2.7 +/- 0.3)E21 cm^-2 in excess with respect to the galactic absorption of 1.0E21 cm^-2. The average unabsorbed flux is 7.7E-11 ergs cm^-2 s^-1. If decaying at the present rate, the source will reach a flux level of 1.7e-12 erg cm^-2 s^-1 (2.6E-2 c/s) at 24 h after the trigger. All errors are quoted at 90% confidence level. This circular is an official product of the Swift-XRT team.