//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9742 SUBJECT: GRB 090802: Fermi GBM detection DATE: 09/08/02 21:19:06 GMT FROM: Elisabetta Bissaldi at MPE Elisabetta Bissaldi (MPE) reports on behalf of the Fermi GBM Team: "At 05:39:03.08 UT on 02 August 2009, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 090802 (trigger 270884345 / 090802235). The on-ground calculated location, using the GBM trigger data, is RA = 51.0, DEC = +37.9 (J2000 degrees, equivalent to 03h 24m, 37d 54'), with an uncertainty of 4.9 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 Fermi LAT boresight is 123 degrees. The GBM light curve consists of a single FRED-like pulse with a duration (T90) of about 128 ms (8-1000 keV). The time-averaged spectrum from T0-0.016 s to T0+0.056 s is best fit by a Band function with Epeak = 283 (-53 +58) keV, alpha = -0.42 (-0.17 +0.21), and beta = -2.4 (-0.7 +0.3) (Castor C-stat 325 for 361 d.o.f.). The event fluence (8-1000 keV) in this time interval is (6.5 +/- 0.3)E-07 erg/cm^2. The 32-ms peak photon flux measured starting from T0-0.008 s in the 8-1000 keV band is 61.2 +/- 2.8 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog." //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9744 SUBJECT: GRB 090802B: Fermi GBM detection DATE: 09/08/03 22:04:39 GMT FROM: Alexander van der Horst at NASA/MSFC A.J. van der Horst (NASA/MSFC/ORAU) reports on behalf of the Fermi GBM Team: "At 15:58:23.44 UT on 2 August 2009, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 090208B (trigger 270921505 / 090802666). The on-ground calculated location, using the GBM trigger data, is RA = 267.0, DEC = -71.8 (J2000 degrees, equivalent to 17h48m, -71d46'), with an uncertainty of 10.7 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 Fermi LAT boresight is 104 degrees. Since the source is weak, the time-averaged spectrum is poorly constrained."