Nonmodal Cascade in the Compressible Solar Atmosphere: Self-Heating, an Alternative Way to Enhance Wave Heating

The nonmodal self-heating mechanism recently proposed by Rogava is applied to the medium of solar coronal holes with an inhomogeneous plasma flow along the magnetic field lines. The viscosity force is assumed to be anisotropic. The efficiency of the nonmodal cascade process is examined for different...

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Published inThe Astrophysical journal Vol. 642; no. 1; pp. L73 - L76
Main Authors Shergelashvili, Bidzina M, Poedts, Stefaan, Pataraya, Avtandil D
Format Journal Article
LanguageEnglish
Published Chicago, IL IOP Publishing 01.05.2006
University of Chicago Press
Subjects
Astronomy
Earth, ocean, space
Exact sciences and technology
Solar atmosphere
MHD waves
Sun
MHD-Sun: corona-waves
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Summary:The nonmodal self-heating mechanism recently proposed by Rogava is applied to the medium of solar coronal holes with an inhomogeneous plasma flow along the magnetic field lines. The viscosity force is assumed to be anisotropic. The efficiency of the nonmodal cascade process is examined for different sets of environmental parameters and for different wave parameters. It is concluded that the proposed mechanism can serve as an alternative mechanism for explaining the significant heat production in the lower corona, even when only laminar values of the viscosity coefficients are taken into account.
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ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1086/504350