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Radiation from accelerated particles in relativistic jets with shocks, shear-flow, and reconnection

Published online by Cambridge University Press:  22 July 2013

K.-I. Nishikawa ,
B. Zhang ,
I. Dutan ,
M. Medvedev ,
P. Hardee ,
E.J. Choi ,
K.W. Min ,
J. Niemiec ,
Y. Mizuno  and
A. Nordlund
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K.-I. Nishikawa
Affiliation:
Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, 320 Sparkman Drive, ZP12, Huntsville, AL 35805, USA
B. Zhang
Affiliation:
Department of Physics, University of Nevada, Las Vegas, NV 89154, USA
I. Dutan
Affiliation:
Institute of Space Science, Atomistilor 409, Bucharest-Magurele 077125, Romania
M. Medvedev
Affiliation:
Department of Physics and Astronomy, University of Kansas, KS 66045, USA
P. Hardee
Affiliation:
Department of Physics and Astronomy, The University of Alabama, Tuscaloosa, AL 35487, USA
E.J. Choi
Affiliation:
Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
K.W. Min
Affiliation:
Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
J. Niemiec
Affiliation:
Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Kraków, Poland
Y. Mizuno
Affiliation:
Institute of Astronomy National Tsing-Hua University, Hsinchu, Taiwan 30013, R.O.C
A. Nordlund
Affiliation:
Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, Denmark
J.T. Frederiksen
Affiliation:
Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, Denmark
H. Sol
Affiliation:
LUTH, Observatoire de Paris-Meudon, 5 place Jules Jansen, 92195 Meudon Cedex, France
M. Pohl
Affiliation:
Institue of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Strasse 24/25, 14476 Potsdam-Golm, Germany
D.H. Hartmann
Affiliation:
Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
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Abstract

We investigated particle acceleration and shock structure associated with an unmagnetized relativistic jet propagating into an unmagnetized plasma. Strong magnetic fields generated in the trailing shock contribute to the electrons transverse deflection and acceleration. We have calculated, self-consistently, the radiation from electrons accelerated in these turbulent magnetic fields. We found that the synthetic spectra depend on the bulk Lorentz factor of the jet, its temperature and strength of the generated magnetic fields. We have also investigated accelerated electrons in strong magnetic fields generated by kinetic shear (Kelvin-Helmholtz) instabilities. The calculated properties of the emerging radiation will guide our understanding of the complex time evolution and/or spectral structure in gamma-ray bursts, relativistic jets in general, and supernova remnants.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 61: Gamma-ray Bursts: 15 Years of GRB Afterglows – Progenitors, Environments and Host Galaxies from the Nearby to the Early Universe , 2013 , pp. 177 - 179
Copyright
© EAS, EDP Sciences 2013

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References

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