GCN Circular 8253
Jamie A. Kennea reports on behalf of the Swift Team: At 17:08 UT, September 16th 2008 Swift began TOO observations of the Fermi GBM and LAT detected GRB 080916C (GCN 8245,8246). Preliminary analysis of downlinked data from this observation reveals a single point source detected in the field of view at RA, Dec = 119.8459, -56.63891 which is equivalent to: RA (J2000): 07h 59m 23.0s Dec (J2000): -56d 38' 20.1" with an estimated uncertainty of 8 arcsec (radius, 90% confidence). We note that this point source is uncatalogued and 189 arcseconds from the center of the Fermi LAT error circle (GCN 8246), within the LAT 90% confidence error circle. Currently we cannot determine if this source is fading, and therefore cannot confirm if this source is associated with GRB 080916C. Observations of this source are on-going.