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Electromagnetic turbulence driven by the mixed mode instability
Niels Bohr Institute Copenhagen University.
Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.ORCID iD: 0000-0003-4055-0552
2008 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 15, no 9, 094503-1-094503-4 p.Article in journal (Refereed) Published
Abstract [en]

In continuation of a previous work, numerical results are presented, concerning relativistically counterstreaming plasmas. Here, the relativistic mixed mode instability evolves through and beyond the linear saturation, well into the nonlinear regime. Besides confirming earlier findings that wave power initially peaks on the mixed mode branch, it is observed that during late time evolution, wave power is transferred to other wave numbers. It is argued that the isotropization of power in wavenumber space may be a consequence of weak turbulence. Further, some modifications to the ideal weak turbulence limit is observed. Development of almost isotropic predominantly electrostatic-partially electromagnetic-turbulent spectra holds relevance when considering the spectral emission signatures of the plasma, namely, bremsstrahlung-partially magnetobremsstrahlung (synchrotron radiation and jitter radiation)-from relativistic shocks in astrophysical jets and from shocks in gamma-ray bursts and active galactic nuclei.

Place, publisher, year, edition, pages
2008. Vol. 15, no 9, 094503-1-094503-4 p.
Keyword [en]
plasma physics
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-43030DOI: 10.1063/1.2985776Local ID: 71019OAI: oai:DiVA.org:liu-43030DiVA: diva2:263887
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13

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Dieckmann, Mark E

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  • apa
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  • de-DE
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  • nn-NB
  • sv-SE
  • Other locale
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Output format
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