MHD waves and instabilities of a temperature-anisotropic plasma in the solar corona as a source of its heating |
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| Authors: | N S Dzhalilov V D Kuznetsov |
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| Institution: | 1.Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation,Russian Academy of Sciences,Troitsk, Moscow oblast,Russia;2.Shamakha Astrophysical Observatory,National Academy of Sciences of Azerbaijan,Baku,Azerbaijan |
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| Abstract: | 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. |
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