Radiation from relativistic jets in turbulent magnetic fields

Journal Article · Mon May 25 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3155889· OSTI ID:21304946

Nishikawa, K -I; Mizuno, Y ^[1]; Medvedev, M ^[2]; Zhang, B ^[3]; Hardee, P ^[4]; Niemiec, J ^[5]; Nordlund, A; Frederiksen, J ^[6]; Sol, H ^[7]; Fishman, G J ^[8]

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1. National Space Science and Technology Center, Huntsville, AL 35805 (United States)
2. Department of Physics and Astronomy, University of Kansas, KS 66045 (United States)
3. Department of Physics, University of Nevada, Las Vegas, NV 89154 (United States)
4. Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL 35487 (United States)
5. Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Krakow (Poland)
6. Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen Oe (Denmark)
7. LUTH, Observatore de Paris-Meudon, 5 place Jules Jansen, 92195 Meudon Cedex (France)
8. NASA/MSFC, Huntsville, AL 35805 (United States)

Using our new 3-D relativistic electromagnetic particle (REMP) code parallelized with MPI, we have investigated long-term particle acceleration associated with an relativistic electron-positron jet propagating in an unmagnetized ambient electron-positron plasma. The simulations have been performed using a much longer simulation system than our previous simulations in order to investigate the full nonlinear stage of the Weibel instability and its particle acceleration mechanism. Cold jet electrons are thermalized and ambient electrons are accelerated in the resulting shocks. The acceleration of ambient electrons leads to a maximum ambient electron density three times larger than the original value. Behind the bow shock in the jet shock strong electromagnetic fields are generated. These fields may lead to the afterglow emission. We have calculated the time evolution of the spectrum from two electrons propagating in a uniform parallel magnetic field to verify the technique.

• OSTI ID: 21304946
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1133; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
AFTERGLOW
COMPUTERIZED SIMULATION
ELECTROMAGNETIC FIELDS
ELECTRON DENSITY
ELECTRONS
EMISSION
INSTABILITY
JETS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
POSITRONS
R CODES
RELATIVISTIC RANGE
SHOCK WAVES
SYNCHROTRON RADIATION