TITLE: GCN CIRCULAR NUMBER: 8104 SUBJECT: GLAST Burst Monitor detection of GRB 080812 DATE: 08/08/13 22:33:01 GMT FROM: Michael S. Briggs at UAH and MSFC Michael Briggs (UAH) and Alexander van der Horst (NASA/ORAU) report on behalf of the GLAST Burst Monitor Team: "At 21:19:33 UT on 2008 Aug 12, the GLAST Burst Monitor (GBM) triggered and located GRB 080812 (trigger 240268774 / 080812.889). The on-ground calculated location, using the GBM trigger data, is RA = 174.3, Dec = -41.3 (J2000 degrees) (equivalent to J2000 11h 37m, -41d 18'), with an uncertainty of 2.8 degrees (radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). The angle from the Large Area Telescope (LAT) boresight is 71 degrees. This GRB was about 15 s long with several peaks. The time-averaged spectrum from T-3.072 to T+14.336 s is best fit with a Comptonized spectrum (power law times exponential cutoff). The power law index is +0.17 +/- 0.27 and the cutoff energy, parameterized as Epeak, is 140 +/- 14 keV."