//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 9608 SUBJECT: GRB 090703: Fermi GBM detection DATE: 09/07/03 17:04:48 GMT FROM: Elisabetta Bissaldi at MPE Elisabetta Bissaldi (MPE) reports on behalf of the Fermi GBM Team: "At 07:54:02.48 UT on 03 July 2009, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 090703 (trigger 268300444 / 090703329). The on-ground calculated location, using the GBM trigger data, is RA = 0.8, DEC = 9.7 (J2000 degrees, equivalent to 00h 03m, 09d 42'), with an uncertainty of 5.3 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 25 degrees. The GBM light curve consists of a single peak with a duration (T90) of about 9 s (8-1000 keV). The time-averaged spectrum from T0-2.6 s to T0+6.7 s is adequately fit by a simple power law function with index -1.72 +/- 0.06 (Castor C-stat 232 for 240 d.o.f.). The event fluence (8-1000 keV) in this time interval is (6.8 +/- 0.2)E-07 erg/cm^2. The 1-sec peak photon flux measured starting from T0 in the 8-1000 keV band is 1.00 +/- 0.10 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."