TITLE: GCN CIRCULAR NUMBER: 7044 SUBJECT: GRB 071104: Possible Swift UVOT Afterglow Candidate DATE: 07/11/05 05:56:30 GMT FROM: Stefan Immler at NASA/GSFC S. Immler (NASA/CRESST/GSFC) reports on behalf of the Swift UVOT team: Swift UVOT started observing the field of the SuperAGILE burst GRB 071104 (Donnarumma et al., GCN Circ. 7042), 20.6 ks after the AGILE trigger. In the first 120-s and co-added 5037-s of data obtained in the white filter, a possible UVOT afterglow candidate is found consistent with the XRT position (Page, GCN 7043), with a magnitude of 20.6+/-0.1 mag, overlaying the coincidence-loss structure of a nearby bright star. The value quoted above is not corrected for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.54 mag in the direction of the burst (Schlegel et al. 1998). Further analysis is required due to possible contamination with the coincidence-loss structure of the nearby star and the high source density of the field in the Galactic plane.