Diffusive Synchrotron Radiation from Relativistic Shocks of Gamma-Ray Burst Sources
arXiv:astro-ph/0502245 · doi:10.1086/498732
Abstract
The spectrum of electromagnetic emission generated by relativistic electrons scattered on small-scale random magnetic fields, implied by current models of the magnetic field generation in the gamma-ray burst sources, is considered. The theory developed includes both perturbative and non-perturbative versions and, therefore, suggests a general treatment of the radiation in arbitrary small-scale random field. It is shown that a general treatment of the random nature of the small-scale magnetic field, as well as angular diffusion of the electrons due to multiple scattering by magnetic inhomogeneities (i.e., non-perturbative effects), give rise to a radiation spectrum that differs significantly from so-called "jitter" spectrum. The spectrum of diffusive synchrotron radiation seems to be consistent with the low energy spectral index distribution of the gamma-ray bursts.
15 pages, 2 figures, accepted for ApJ. Typo removed. More discussion added. Wording adjusted to ApJ style: "errors" replaced with "oversimplifications" or so
References in corpus (4)
Cited by in corpus (34)
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