Comments on the acoustic heating of stellar coronae

Details Comments on the acoustic heating of stellar coronae Comments on the acoustic heating of stellar coronae

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....99..173u&link_type=abstract

Astronomy and Astrophysics, vol. 99, no. 1, June 1981, p. 173-176. Research supported by the Deutsche Forschungsgemeinschaft.

Astronomy and Astrophysics

Astrophysics

16

Acoustic Excitation, Magnetohydrodynamic Waves, Plasma Heating, Stellar Coronas, Stellar Magnetic Fields, X Ray Sources, Dwarf Stars, Early Stars, Heao 2, Late Stars, M Stars, Main Sequence Stars, Oso-8, Shock Heating, Shock Waves, Variable Stars

Scientific paper

Recent claims that UV and X-ray observations allow the rejection of the acoustic heating theory of stellar coronae are shown to be unfounded. In particular, the argument that in late type stars the acoustic flux is insufficient to balance the observed X-ray flux is contradicted by new calculations which use Lighthill's theory corrected for density stratification and for strong magnetic fields.

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