TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5348 SUBJECT: GRB 060719: XRT refined analysis DATE: 06/07/19 17:05:37 GMT FROM: Maria Laura Conciatore at ASDC M.L. Conciatore, M. Capalbi, M. Perri, L. Vetere (ASDC), D.N. Burrows (PSU) and M. Stamatikos (NASA/ORAU) report on behalf of the Swift/XRT team: We have analyzed the first 5 orbits of XRT data from GRB 060719 (Stamatikos et al., GCN 5339). A 8.4 ks Photon Counting mode image provides a refined XRT position: RA(J2000) = 01h 13m 43.57s, Dec(J2000) = -48d 22m 55.0s with an uncertainty of 3.7 arcsec (90% containment). This position is 3.1 arcsec away from the preliminary XRT position reported in GCN 5339. The X-ray light curve displays two flares during the first orbit at about 130 seconds and 190 seconds after the BAT trigger. The afterglow decay from T+300s to T+24ks can be fit with a broken power-law with an initial decay slope of -0.2+/-0.1, a break at 6.9+/-1.7 ks, and a post-break slope of -1.3+/-0.3. A power-law fit to the 0.3-10 keV spectrum from T+86s to T+128s gives a photon index of 3.0+/-0.4 and a column density of (2.4+/-0.9)e21 cm**-2. We note the Galactic hydrogen column density in the direction of the burst is 1.9e20cm**-2. If the burst continues decaying at the current rate we estimate a 0.3-10 keV unabsorbed flux of ~4e-13 ergs cm**-2 s**-1 at T+24hr. This circular is an official product of the Swift XRT Team.