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A nonlinear theory of the parallel firehose and gyrothermal instabilities in a weakly collisional plasma

Abstract:

Weakly collisional plasmas dynamically develop pressure anisotropies with respect to the magnetic field. These anisotropies trigger plasma instabilities at scales just above the ion Larmor radius \rho_i and much below the mean free path \lambda_{mfp}. They have growth rates of a fraction of the ion cyclotron frequency - much faster than either the global dynamics or local turbulence. The instabilities dramatically modify the transport properties and, therefore, the macroscopic dynamics of the...

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Journal:
Mon. Not. R. Astron. Soc.
Volume:
413
Pages:
7
Publication date:
2010-02-21
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:71827767-0dcc-454d-8795-850139de220b
Source identifiers:
161998
Local pid:
pubs:161998

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