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Title: MAGNETIC FIELD GENERATION AND PARTICLE ENERGIZATION AT RELATIVISTIC SHEAR BOUNDARIES IN COLLISIONLESS ELECTRON-POSITRON PLASMAS

Abstract

Using particle-in-cell simulations, we study the kinetic physics of relativistic shear flow in collisionless electron-positron (e+e-) plasmas. We find efficient magnetic field generation and particle energization at the shear boundary, driven by streaming instabilities across the shear interface and sustained by the shear flow. Nonthermal, anisotropic high-energy particles are accelerated across field lines to produce a power-law tail turning over just below the shear Lorentz factor. These results have important implications for the dissipation and radiation of jets in blazars and gamma-ray bursts.

Authors:
;  [1];  [2]
  1. Rice University, MS 108, 6100 Main Street, Houston, TX 77005 (United States)
  2. Physics and Astronomy Department, Ohio University, Athens, OH 45701 (United States)
Publication Date:
OSTI Identifier:
22130780
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 766; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANISOTROPY; COSMIC GAMMA BURSTS; ELECTRONS; GALAXIES; INSTABILITY; INTERFACES; MAGNETIC FIELDS; PLASMA; POSITRONS; RELATIVISTIC RANGE; SIMULATION

Citation Formats

Liang, Edison, Smith, Ian, and Boettcher, Markus, E-mail: liang@rice.edu, E-mail: iansmith@rice.edu, E-mail: boettchm@ohio.edu. MAGNETIC FIELD GENERATION AND PARTICLE ENERGIZATION AT RELATIVISTIC SHEAR BOUNDARIES IN COLLISIONLESS ELECTRON-POSITRON PLASMAS. United States: N. p., 2013. Web. doi:10.1088/2041-8205/766/2/L19.
Liang, Edison, Smith, Ian, & Boettcher, Markus, E-mail: liang@rice.edu, E-mail: iansmith@rice.edu, E-mail: boettchm@ohio.edu. MAGNETIC FIELD GENERATION AND PARTICLE ENERGIZATION AT RELATIVISTIC SHEAR BOUNDARIES IN COLLISIONLESS ELECTRON-POSITRON PLASMAS. United States. doi:10.1088/2041-8205/766/2/L19.
Liang, Edison, Smith, Ian, and Boettcher, Markus, E-mail: liang@rice.edu, E-mail: iansmith@rice.edu, E-mail: boettchm@ohio.edu. Mon . "MAGNETIC FIELD GENERATION AND PARTICLE ENERGIZATION AT RELATIVISTIC SHEAR BOUNDARIES IN COLLISIONLESS ELECTRON-POSITRON PLASMAS". United States. doi:10.1088/2041-8205/766/2/L19.
@article{osti_22130780,
title = {MAGNETIC FIELD GENERATION AND PARTICLE ENERGIZATION AT RELATIVISTIC SHEAR BOUNDARIES IN COLLISIONLESS ELECTRON-POSITRON PLASMAS},
author = {Liang, Edison and Smith, Ian and Boettcher, Markus, E-mail: liang@rice.edu, E-mail: iansmith@rice.edu, E-mail: boettchm@ohio.edu},
abstractNote = {Using particle-in-cell simulations, we study the kinetic physics of relativistic shear flow in collisionless electron-positron (e+e-) plasmas. We find efficient magnetic field generation and particle energization at the shear boundary, driven by streaming instabilities across the shear interface and sustained by the shear flow. Nonthermal, anisotropic high-energy particles are accelerated across field lines to produce a power-law tail turning over just below the shear Lorentz factor. These results have important implications for the dissipation and radiation of jets in blazars and gamma-ray bursts.},
doi = {10.1088/2041-8205/766/2/L19},
journal = {Astrophysical Journal Letters},
number = 2,
volume = 766,
place = {United States},
year = {Mon Apr 01 00:00:00 EDT 2013},
month = {Mon Apr 01 00:00:00 EDT 2013}
}
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