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Simulation of Relativistic Shocks and Associated Radiation from Turbulent Magnetic FieldsRecent PIC simulations of relativistic electron-positron (electron-ion) jets injected into a stationary medium show that particle acceleration occurs at shocked regions. Simulations show that the Weibel instability is responsible for generating and amplifying highly nonuniform, small-scale magnetic fields and particle acceleration. These magnetic fields contribute to the electron's transverse deflection behind the shock. The jitter'' radiation from deflected electrons in turbulent magnetic fields has different properties than synchrotron radiation, which is calculated in a uniform magnetic field. This jitter radiation may be important for understanding the complex time evolution and/or spectral structure in gamma-ray bursts, relativistic jets in general, and supernova remnants. We will present detailed spectra for conditions relevant of various astrophysical sites of shock formation via the Weibel instability. In particular we will discuss the application to GRBs and SNRs
Document ID
20100026419
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Nishikawa, K.-I.
(Alabama Univ. Huntsville, AL, United States)
Mizuno, Y.
(Alabama Univ. Huntsville, AL, United States)
Niemiec, J.
(Institute of Nuclear Physics Cracow, Poland)
Medvedev, M.
(Kansas Univ. Lawrence, KS, United States)
Zhang, B.
(Nevada Univ. Las Vegas, NV, United States)
Hardee, P.
(Alabama Univ. Tuscaloosa, AL, United States)
Frederiksen, J.
(Niels Bohr Inst. Copenhagen, Denmark)
Sol, H.
(Observatoire de Paris-Meudon France)
Pohl, M.
(Potsdam Univ. Potsdam, Germany)
Hartmann, D. H.
(Clemson Univ. SC, United States)
Fishman, G. J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
June 13, 2010
Subject Category
Astrophysics
Report/Patent Number
M10-1077
M10-0731
Meeting Information
Meeting: ASTRONIUM 2010: 5th International Conference on Numerical Modeling of Space Plasma Flows
Location: San Diego, CA
Country: United States
Start Date: June 13, 2010
End Date: June 18, 2010
Sponsors: Alabama Univ.
Distribution Limits
Public
Copyright
Other

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