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2008MNRAS.384...33K - Mon. Not. R. Astron. Soc., 384, 33-63 (2008/February-2)
A general scheme for modelling γ-ray burst prompt emission.
KUMAR P. and McMAHON E.
Abstract (from CDS):
The synchrotron-self-Compton (SSC) process fares much better. There is a large solution space for a typical GRB-prompt emission to be produced via the SSC process. The prompt optical emission accompanying the burst is found to be very bright (≲14 mag; for z ∼ 2) in the SSC model, which exceeds the observed flux (or upper limit) for most GRBs. The prompt optical is predicted to be even brighter for the subclass of bursts that have the spectrum fν∝να with α ∼ 1 below the peak of νfν. Surprisingly, there are no SSC solutions for bursts that have α ∼ 1/3; these bursts might require continuous or repeated acceleration of electrons or some physics beyond the simplified, although generic, SSC model considered in this work. Continuous acceleration of electrons can also significantly reduce the optical flux that would otherwise accompany γ-rays in the SSC model.
Abstract Copyright: © 2008 The Authors
Journal keyword(s): radiation mechanisms: non-thermal - methods: analytical - cosmology: theory - gamma-rays: bursts
Simbad objects: 9
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