GRB spectral parameter modeling

Gregory Fleishman, Fedor A. Urtiev

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Fireball model of the gamma-ray bursts (GRBs) predicts generation of numerous internal shocks, which efficiently accelerate charged particles and generate relatively small-scale stochastic magnetic and electric fields. The accelerated particles diffuse in space due to interaction with the random waves and so emit so called Diffusive Synchrotron Radiation (DSR) in contrast to standard synchrotron radiation they would produce in a large-scale regular magnetic fields. In this contribution we present key results of detailed modeling of the GRB spectral parameters, which demonstrate that the non-perturbative DSR emission mechanism in a strong random magnetic field is consistent with observed distributions of the Band parameters and also with cross-correlations between them.

Original languageEnglish (US)
Title of host publicationAdvances in Plasma Astrophysics
EditorsAlfio Bonanno, Elisabete de Gouveia Dal Pino, Alexander Kosovichev
Number of pages3
StatePublished - Sep 2010

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • acceleration of particles
  • galaxies: jets
  • magnetic fields
  • radiation mechanisms: non-thermal
  • shock waves
  • turbulence


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