Using generalized extreme value fits to 30-day maxima from Fermi-GBM and BATSE, the fluence and peak flux of GRB 221009A are extreme outliers, with median return periods of about 1000 years and 140 years respectively.
On the origin of the gamma-ray burst GRB221009A
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We analyze a bright and rare burst, GRB20221009A, showing through NED data that the angular distance between GRB221009A and the supernova SN 2022xiw is almost the same angular separation with galactic objects, i.e., the SN-GRB connection at z = 0.151 is not robust. Gamma rays with up to 18 TeV detected in association with the GRB constrain the attenuation to which they are subject at cosmological distances. GR221009A is out of scale relative to other long-lasting GRBs and comes from a region with an excess of soft gamma repeaters (SGR), suggesting that GRB221009A is a giant SGR, with energy release Eiso aproximately 10^{44} erg. The GRBs propagation across the galactic plane reinforces this assumption.
fields
astro-ph.HE 1years
2025 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Extreme value distribution for gamma-ray-burst prompt data -- How unexpected was the BOAT event?
Using generalized extreme value fits to 30-day maxima from Fermi-GBM and BATSE, the fluence and peak flux of GRB 221009A are extreme outliers, with median return periods of about 1000 years and 140 years respectively.