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Plasmas in Gamma-Ray Bursts: Particle Acceleration, Magnetic Fields, Radiative Processes and Environments

Physics Department, Bar Ilan University, Ramat-Gan 52900, Israel
Galaxies 2019, 7(1), 33; https://doi.org/10.3390/galaxies7010033
Received: 22 November 2018 / Revised: 5 February 2019 / Accepted: 7 February 2019 / Published: 15 February 2019
(This article belongs to the Special Issue Cosmic Plasmas and Electromagnetic Phenomena)
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Abstract

Being the most extreme explosions in the universe, gamma-ray bursts (GRBs) provide a unique laboratory to study various plasma physics phenomena. The complex light curve and broad-band, non-thermal spectra indicate a very complicated system on the one hand, but, on the other hand, provide a wealth of information to study it. In this chapter, I focus on recent progress in some of the key unsolved physical problems. These include: (1) particle acceleration and magnetic field generation in shock waves; (2) possible role of strong magnetic fields in accelerating the plasmas, and accelerating particles via the magnetic reconnection process; (3) various radiative processes that shape the observed light curve and spectra, both during the prompt and the afterglow phases, and finally (4) GRB environments and their possible observational signature. View Full-Text
Keywords: jets; radiation mechanism: non-thermal; galaxies: active; gamma-ray bursts; TBD jets; radiation mechanism: non-thermal; galaxies: active; gamma-ray bursts; TBD
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Pe’er, A. Plasmas in Gamma-Ray Bursts: Particle Acceleration, Magnetic Fields, Radiative Processes and Environments. Galaxies 2019, 7, 33.

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