The origin of the prompt GRB spectrum
F. Daigne (1), Z. Bosnjak (2, 1), G. Dubus (3, 1) ((1) Institut, d'Astrophysique de Paris, (2) CEA Saclay, DSM/IRFU/Service d'Astrophysique,, (2) Laboratoire d'Astrophysique de Grenoble)
TL;DR
This paper investigates the physical mechanisms behind the prompt gamma-ray emission in GRBs, analyzing the internal shock model to identify the dominant radiation process and explaining high-energy features observed by Fermi-LAT.
Contribution
It introduces a detailed internal shock model to explain the prompt emission spectrum and high-energy features in gamma-ray bursts, advancing understanding of their radiative origins.
Findings
Identifies the dominant radiative process in the Fermi-GBM range.
Provides an explanation for high-energy features observed by Fermi-LAT.
Enhances the theoretical understanding of GRB prompt emission mechanisms.
Abstract
Using a detailed model of the internal shock phase, we discuss the origin of the prompt emission in gamma-ray bursts. We focus on the identification of the dominant radiative process (Fermi-GBM range) and propose an explanation for some features observed by Fermi-LAT at high energy in some GRB lightcurves.
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Taxonomy
TopicsGamma-ray bursts and supernovae · Astronomy and Astrophysical Research