Radio outbursts in RS Canum Venaticorum stars - Coronal heating and electron runaway

Details Radio outbursts in RS Canum Venaticorum stars - Coronal heating and electron runaway Radio outbursts in RS Canum Venaticorum stars - Coronal heating and electron runaway

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...295..628m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 295, Aug. 15, 1985, p. 628-633.

Physics

Plasma Physics

12

Coronal Loops, Eclipsing Binary Stars, Electron Runaway (Plasma Physics), Radio Bursts, Radio Stars, Stellar Coronas, Electric Field Strength, Electron Acceleration, Magnetohydrodynamic Turbulence, Plasma Heating, Stellar Magnetic Fields, Synchrotron Radiation

Scientific paper

Radio outbursts of RS CVn stars are sometimes thought of as analogs of flares in red dwarf stars. The author examines the possibility that the outbursts are not due to flares, but rather to a highly efficient case of coronal heating: mechanical energy reaching the corona from the convection zone of an RS CVn star gives rise to induced electric fields which may be so large that electron runaway becomes possible. It is proposed that gyrosynchrotron emission from fast electrons which are produced by the process are the source of radio outbursts from RS CVn stars.

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