Jitter radiation in gamma-ray bursts and their afterglows: emission and self-absorption

Type Journal Article
Names Jared C. Workman, Brian J. Morsony, Davide Lazzati, Mikhail V. Medvedev
Publication Monthly Notices of the Royal Astronomical Society
Volume 386
Issue 1
Pages 199-210
Date May 1, 2008
Short Title Jitter radiation in gamma-ray bursts and their afterglows
URL http://adsabs.harvard.edu/abs/2008MNRAS.386..199W
Library Catalog NASA ADS
Abstract Relativistic electrons moving into a highly tangled magnetic field emit jitter radiation. We present a detailed computation of the jitter radiation spectrum, including self-absorption, for electrons inside Weibel-like shock generated magnetic fields. We apply our results to the case of the prompt and afterglow emission of gamma-ray bursts. We show that jitter emission can reproduce most of the observed features with some important differences with respect to standard synchrotron, especially in the frequency range between the self-absorption and the peak frequency. We discuss the similarities and differences between jitter and synchrotron and discuss experiments that can disentangle the two mechanisms.
Tags Magnetic Fields, gamma-rays: bursts, radiation mechanisms: non-thermal
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