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Instability of entropy waves in cosmic plasma |
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| Authors: | B V Somov N S Dzhalilov J Staude |
| Institution: | (1) Sternberg Astronomical Institute, Universitetskii pr. 13, Moscow, 119899, Russia;(2) Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia;(3) Shamakhi Astrophysical Observatory, Azerbaidjan Academy of Sciences, Baku Az, 1000, Azerbaidjan;(4) Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany |
| Abstract: | A dispersion equation is derived for small disturbances of the magnetohydrodynamic type in optically transparent plasma with cosmic abundance of elements. The electron heat conductivity along the magnetic field and proton heat conductivity across the field are taken into account. It is shown that entropy waves increase exponentially in wide ranges of temperatures and densities of the cosmic plasma. Manifestations of instability of the entropy waves in the cosmic plasma are discussed. |
| Keywords: | PACS" target="_blank">PACS 52 30 Cv 94 05 -a 95 30 Qd |
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