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Relativistic Particle-In-Cell Simulations of Particle Accleration in Relativistic JetsHighly accelerated particles are observed in astrophysical systems containing relativistic jets and shocks, e.g., active galactic nuclei (AGNs), microquasars, and Gamma-Ray Bursts (GRBs). Particle-In-Cell (PIC) simulations of relativistic electron-ion and electron-positron jets injected into a stationary medium show that efficient acceleration occurs downstream in the jet. In collisionless relativistic shocks particle acceleration is due to plasma waves and their associated instabilities, e.g., the Buneman instability, other two-stream instabilities, and the Weibel (filamentation) instability. Simulations show that the Weibel instability is responsible for generating and amplifying highly non-uniform, small-scale magnetic fields. The instability depends on strength and direction of the magnetic field. Particles in relativistic jets may be accelerated in a complicated dynamics of relativistic jets with magnetic field. We present results of our recent PIC simulations.
Document ID
20080036822
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Nishikawa, K.-I.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Hardee, P.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Mizuno, Y.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Medvedev, M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Hartmann, D. H.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Fishman, J. F.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
July 13, 2008
Subject Category
Astrophysics
Meeting Information
Meeting: 37th COSPAR Scientific Assembly
Location: Montreal
Country: Canada
Start Date: July 13, 2008
End Date: July 20, 2008
Sponsors: Committee on Space Research
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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