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Gamma-ray bursts appear simpler than expected?

Abstract : The cosmic gamma-ray bursts are certainly an enigma in astrophysics. The "standard fireball" scenario developed during many years has provided a possible explanation of this phenomenon. The aim of this work is simply to explore a new possible interpretation by developing a coherent scenario inside the global picture of stellar evolution. At the basis of our scenario is the fact that maybe we have not fully understood how the core of a pair instability supernovae explode. In such a way, we have proposed a new paradigm assuming that the core of such massive star, instead of doing a symmetrical explosion, is completely fragmented in hot spots of burning nuclear matter. We have tested our scenario using some observational data like GRB spectrum, light curves, Amati relation and GRB-SN connection, and for each set of data we have proposed a possible physical interpretation. We have also suggested some possible tests of this scenario by measurement at high redshift. If this scenario is correct, it tells us simply that cosmic gamma-ray bursts are simply a missing link in stellar evolution.
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https://hal-insu.archives-ouvertes.fr/insu-03710594
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Submitted on : Thursday, June 30, 2022 - 5:41:07 PM
Last modification on : Saturday, July 2, 2022 - 3:06:14 AM

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P. Chardonnet, A. A. Filina, M. V. Popov, V. M. Chechetkin, A. A. Baranov. Gamma-ray bursts appear simpler than expected?. Astronomical & Astrophysical Transactions, 2016, 29, pp.109-128. ⟨insu-03710594⟩

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