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GRB prompt phase spectra under backscattering dominated model

Mukesh Kumar Vyas, Asaf Pe'er, David Eichler

arXiv, 2021

Abstract

We propose a backscattering dominated prompt emission model for gamma-ray bursts (GRB) prompt phase in which the photons generated through pair annihilation at the centre of the burst are backscattered through Compton scattering by an outflowing stellar cork. We show that the obtained spectra are capable of explaining the low and high energy slopes as well as the distribution of spectral peak energies in their observed prompt spectra.

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