Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011astl...37..649d&link_type=abstract
Astronomy Letters, Volume 37, Issue 9, pp.649-655
Astronomy and Astrophysics
Astrophysics
Plasma Astrophysics, Solar Corona, Solar Wind, Anisotropic Magnetohydrodynamics, Mhd Instabilities, Plasma Heating
Scientific paper
The MHD instabilities of a temperature-anisotropic coronal plasma are considered. We show that aperiodic mirror instabilities of slow MHD waves can develop under solar coronal conditions for weak magnetic fields ( B < 1 G) and periodic ion-acoustic instabilities can develop for strong magnetic fields ( B > 10 G). We have found the instability growth rates and estimated the temporal and spatial scales of development and decay of the periodic instability. We show that the instabilities under consideration can play a prominent role in the energy balance of the corona and may be considered as a large-scale energy source of the wave coronal heating mechanism.
Dzhalilov Namig S.
Kuznetsov Vladimir D.
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