Whistler Heat Flux Instability at High Beta

Details Whistler Heat Flux Instability at High Beta Whistler Heat Flux Instability at High Beta

Feb 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...529.1131g&link_type=abstract

The Astrophysical Journal, Volume 529, Issue 2, pp. 1131-1135.

Astronomy and Astrophysics

Astronomy

5

Instabilities, Plasmas, Sun: Solar Wind, Stars: Winds, Outflows

Scientific paper

Enhanced fluctuations from electromagnetic heat flux instabilities in collisionless plasmas may, through wave-particle scattering, constrain the electron heat flux qe which flows parallel to the background magnetic field. This manuscript examines the linear Vlasov theory predictions for threshold conditions on the whistler heat flux instability at high βe, the electron beta, a situation which may have application to both solar wind and astrophysical plasmas. Theory predicts a threshold heat flux which scales approximately as β-0.9e. One possible consequence of this instability is that it imposes an upper bound on qe. We discuss possible applications of such a heat flux limit in the cooling flows of clusters of galaxies with βe>>1.

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