GRB 241115A: Fermi GBM Observation

"At 13:18:24.73 UT on 15 November 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241115A (trigger 753369509/241115554). which was also detected by Swift BAT (M. A. Williams et al. 2024, GCN 38235). The Fermi GBM on-ground location is consistent with the Swift BAT position. The angle from the Fermi LAT boresight is 46 degrees. The GBM light curve consists of a single emission episode with a duration (T90) of about 3.1 s (50-300 keV). The time-averaged spectrum from T0-3.4 to T0+5.8 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.7 +/- 0.1 and the cutoff energy, parameterized as Epeak, is 90 +/- 7 keV. The event fluence (10-1000 keV) in this time interval is (1.57 +/- 0.08)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+0.32 s in the 10-1000 keV band is 7.7 +/- 0.3 ph/s/cm^2. A Band function fits the spectrum equally well with Epeak= 80 +/- 9 keV, alpha = -0.6 +/- 0.2 and beta = -2.7 +/- 0.4. 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/"