GCN Circular 17926
M.G. Bernardini (INAF-OAB), P. D'Avanzo (INAF-OAB) and A. Melandri (INAF-OAB) report on behalf of the Swift-XRT team: A second epoch of XRT data was collected on the field of the MAXI-detected burst: GRB 150608A (Arimoto, et al., GCN Circ. 17912) on 2015 June 13. The observations consist of 2 ks of PC mode data, from T0+389 ks to T0+395 ks. The X-ray source reported in GCN Circ. 17917, Bernardini et al., measured at a mean count rate of 8.3e-01 count/sec (0.3-10 keV) in the first epoch of XRT observations has faded to a mean count rate of (7.1e-03+/-2.2e-03) count/sec (0.3-10 keV) in the second epoch. Assuming a power-law decay, the corresponding decay index is alpha=1.28 (-0.11, +0.17). We therefore confirm that this is the X-ray afterglow of GRB 150608A. This circular is an official product of the Swift-XRT team.