TITLE: GCN CIRCULAR NUMBER: 11545 SUBJECT: GRB 110107A detected in ground analysis of BAT slew data DATE: 11/01/08 11:50:43 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift J. R. Cummings (GSFC/UMBC) on behalf of the Swift-BAT team GRB 110107A occurred at 21:15:51 UTC. It was observed by Fermi GBM (trigger 316127753) and occurred during a Swift slew with BAT event capture. There is a strong source in a mosaic of BAT images at RA, Dec 299.890, 41.889, which is RA (J2000) 19h 59m 33.6s Dec (J2000) +41d 53m 19s with an estimated 90% uncertainty of 3 arcmin radius. The burst was about 100 seconds long, starting at about T-70 sec and lasting until about T+40 sec. The BAT event data ended at about T+21 sec. The burst had multiple peaks, with the largest flux at about T0, the time of the Fermi GBM trigger. The peak count rate in BAT was about 4000 counts/sec. A Swift Target of Opportunity observation has been requested and approved.