TITLE: GCN CIRCULAR NUMBER: 7867 SUBJECT: GRB 080603A: final Swift-XRT observations. DATE: 08/06/10 16:14:56 GMT FROM: Boris Sbarufatti at INAF-IASF-Pa B. Sbarufatti, V. Mangano, V. La Parola (INAF-IASF Pa) report on behalf of the Swift-XRT team. Swift-XRT continued observing the afterglow of the INTEGRAL-detected GRB 080603A. After the first detection of the X-ray afterglow, showing flare like activity previously reported (Sbarufatti et al., GCN Circ. 7810) Swift detected the source also at T+234 ks, with count-rate (8+/-2)E-3 counts/s (2.6 ks exposure) and at T+578 ks, with count-rate (2.5+/-0.8)E-3 counts/s (6.9 ks exposure). Extrapolation from these two points gives a power-law decay index of 1.3 +/- 0.4 (1-sigma CL) for the afterglow. This Circular is an official product of the Swift-XRT team.