GCN Circular 32181
Subject
GRB 220606A: Fermi GBM observation
Event
Date
2022-06-08T14:32:53Z (3 years ago)
From
Boyan A. Hristov at UAH <bah0046@uah.edu>
B. Hristov (UAH) and C. Meegan (UAH)
report on behalf of the Fermi GBM Team:
"At 00:35:39.28 UT on 06 June 2022, the Fermi Gamma-Ray Burst Monitor
(GBM) triggered and located GRB 220606A (trigger 676168544 / 220606025,
GCN 32164), which was also detected by the Swift/BAT-GUANO
(A. Tohuvavohu et al. 2022, GCN 32171).
The GBM light curve consists of multiple peaks with a duration (T90)
of about 19.7 +/- 1.6 s (50-300 keV).
The time-averaged spectrum from T0-2.560 s to T0+17.664 s is well fit
by a simple power law with index = -1.37 +/- 0.03.
The event fluence (10-1000 keV) in this time interval is
(2.88 +/- 0.17)E-6 erg/cm^2. The 1-sec peak photon flux measured
starting from T0-0.64 s in the 10-1000 keV band is
1.6 +/- 0.2 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/"