TITLE:   GCN CIRCULAR
NUMBER:  37789
SUBJECT: GRB 241013A: Fermi GBM Observation
DATE:    24/10/15 15:34:38 GMT
FROM:    Peter Veres at University of Alabama in Huntsville <veresp@gmail.com>


P. Veres (UAH) and C. Meegan (UAH) report on behalf of
the Fermi Gamma-ray Burst Monitor Team:

"At 00:58:34.36 UT on 13 October 2024, the Fermi Gamma-ray Burst Monitor (GBM)
triggered and located GRB 241013A (trigger 750473919/241013041).
which was also detected by INTEGRAL (Gotz et al. 2024, GCN 37781).
The Fermi GBM on-ground location is consistent with the INTEGRAL position.

The angle from the Fermi LAT boresight is 29 degrees.

The GBM light curve consists of a single emission episode with a duration (T90)
of about 9 s (50-300 keV). The time-averaged spectrum
from T0-6.1 to T0+3.6 s is best fit by
a simple power law function with index -1.26 +/- 0.06.

The event fluence (10-1000 keV) in this time interval is
(1.4 +/- 0.1)E-06 erg/cm^2. The 1-sec peak photon flux measured
starting from T0+2.1 s in the 10-1000 keV band is 1 +/- 0.1 ph/s/cm^2.

A power law function with an exponential high-energy cutoff fits the spectrum equally well.
The power law index is -0.58 +/- 0.29 and the cutoff energy, parameterized as
Epeak, is 550 +/- 200 keV.

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/"