TITLE: GCN CIRCULAR NUMBER: 36641 SUBJECT: GRB 240607A: Fermi GBM Observation DATE: 24/06/07 20:46:46 GMT FROM: Sarah Dalessi at UAH <sd0104@uah.edu> S. Dalessi (UAH) and C. Meegan (UAH) report on behalf of the Fermi Gamma-ray Burst Monitor Team: "At 11:01:14.31 UT on 07 June 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240607A (trigger 739450879/240607459), which was also detected by AstroSat (G. Waratkar et al. 2024, GCN 36638) and INTEGRAL/SPI-ACS (trigger #10733). The final localization can be found in GCN 36634 as well as the notice of a bright burst (S. Dalessi et al. 2024, GCN 36637). The angle from the Fermi LAT boresight is 109 degrees. The GBM light curve three pulses with a duration (T90) of about 20.2 s (50-300 keV). The time-averaged spectrum from T0+0.002 to T0+27.136 s is best fit by a Band function with Epeak = 247 +/- 4 keV, alpha = -0.92 +/- 0.01, and beta = -2.69 +/- 0.07. The event fluence (10-1000 keV) in this time interval is (9.2 +/- 0.5)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+11 s in the 10-1000 keV band is 95.8 +/- 0.8 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/" View this GCN Circular online at https://gcn.nasa.gov/circulars/36641. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...