Cosmic Research

, Volume 46, Issue 5, pp 392–395 | Cite as

Instability of entropy waves in cosmic plasma

  • B. V. Somov
  • N. S. Dzhalilov
  • J. Staude
Short Communications


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.


52.30.Cv 94.05.-a 95.30.Qd 


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Copyright information

© MAIK Nauka 2008

Authors and Affiliations

  • B. V. Somov
    • 1
  • N. S. Dzhalilov
    • 2
    • 3
  • J. Staude
    • 4
  1. 1.Sternberg Astronomical InstituteMoscowRussia
  2. 2.Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave PropagationRussian Academy of SciencesTroitsk, Moscow oblastRussia
  3. 3.Shamakhi Astrophysical ObservatoryAzerbaidjan Academy of SciencesBaku AzAzerbaidjan
  4. 4.Astrophysikalisches Institut PotsdamPotsdamGermany

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