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Radio wave heating of astrophysical plasmas

Gangadhara, RT and Krishan, V (1990) Radio wave heating of astrophysical plasmas. In: Journal of Astrophysics & Astronomy, 11 (4). pp. 515-531.

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Abstract

The coherent plasma process such as parametric decay instability (PDI) has been applied to a homogeneous and unmagnetized plasma. These instabilities cause anomalous absorption of strong electromagnetic radiation under specific conditions of energy and momentum conservation and thus cause anomalous heating of the plasma. The maximum plasma temperatures reached are functions of luminosity of the radio radiation and plasma parameters. We believe that these processes may be taking place in many astrophysical objects. Here, the conditions in the sources 3C 273, 3C 48 and Crab Nebula are shown to be conducive to the excitation of PDI. These processes also contribute towards the absorption of 21cm radiation

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: plasma - parametric instability - quasar - Crab Nebula - anomalous absorption - electromagnetic waves
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Ms TV Yashodha
Date Deposited: 12 Jan 2011 11:15
Last Modified: 12 Jan 2011 11:15
URI: http://eprints.iisc.ac.in/id/eprint/34972

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