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arXiv · 2410.18131

On the origin of the gamma-ray burst GRB221009A

Carlos Navia·Marcel Oliveira·B. Felicio·Andre Nepomuceno
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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.

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Carlos Navia, Marcel Oliveira, B. Felicio, Andre Nepomuceno. 2024-10-19. On the origin of the gamma-ray burst GRB221009A. https://arxiv.org/abs/2410.18131

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