Plasma Radio Emission of Beam-Plasma Structures in the Solar Corona

Details Plasma Radio Emission of Beam-Plasma Structures in the Solar Corona Plasma Radio Emission of Beam-Plasma Structures in the Solar Corona

Aug 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003soph..215..335m&link_type=abstract

Solar Physics, v. 215, Issue 2, p. 335-341 (2003).

Physics

1

Scientific paper

Recent progress in the description of electron beam propagation in a plasma allows us to obtain explicit expressions for Langmuir turbulence generated by the beam. Radio emission of an electron beam accompanied by Langmuir turbulence (beam-plasma structure - BPS), propagating in the solar corona is considered within the plasma emission mechanism. The maximum brightness temperatures of a BPS radio emission with velocity vBPS~0.35 c at fundamental and harmonic frequencies are found to be equal to TF=1013 K, TH=1016 K, respectively. It is shown that the temperature of radio emission sharply declines with the decrease of BPS velocity. The dominant drift velocity of Type III sources (~0.3 c) and broad range of observable brightness temperatures are naturally explained by the latter fact.

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