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Magnetofluid dynamics of magnetized cosmic plasma: firehose and gyrothermal instabilities

Abstract:

Both global dynamics and turbulence in magnetized weakly collisional cosmic plasmas are described by general magnetofluid equations that contain pressure anisotropies and heat fluxes that must be calculated from microscopic plasma kinetic theory. It is shown that even without a detailed calculation of the pressure anisotropy or the heat fluxes, one finds the macroscale dynamics to be generically unstable to microscale Alfvenically polarized fluctuations. Two instabilities are considered in de...

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Publication status:
Published

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Authors


Schekochihin, AA More by this author
Cowley, SC More by this author
Journal:
Mon.Not.Roy.Astron.Soc.
Volume:
405
Issue:
1
Pages:
291
Publication date:
2009-12-08
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:94d94082-4b78-4cf2-8a72-1b8deaee42b4
Source identifiers:
161606
Local pid:
pubs:161606

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