The propagation of perturbations in the stellar atmosphere stratified due to gravity with steep density drop

Details The propagation of perturbations in the stellar atmosphere stratified due to gravity with steep density drop The propagation of perturbations in the stellar atmosphere stratified due to gravity with steep density drop

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979acasn..20..289y&link_type=abstract

Acta Astronomica Sinica, vol. 20, Sept. 1979, p. 289-293. In Chinese, with abstract in English.

Computer Science

Sound

Atmospheric Stratification, Gravity Waves, Photosphere, Shock Wave Propagation, Small Perturbation Flow, Stellar Atmospheres, Adiabatic Conditions, Boundary Value Problems, Chromosphere, Convective Flow, Density Distribution, Dynamic Characteristics, Gravitational Effects, Magnetohydrodynamic Waves, Sound Waves, Temperature Effects

Scientific paper

The propagation of perturbations in the stellar atmosphere stratified due to gravity with steep density drop is studied. The results obtained in the present work are very different from those derived under the adiabatic assumption. It is shown that the dynamic property is of importance to the propagation of perturbations in the stellar atmosphere and the height where the shocks are formed. Calculations indicate that the small perturbations under the photosphere cannot propagate outwards smoothly and form the shock wave. Consequently, it is very hard to say that chromospheric and coronal heating are produced through the dissipation of acoustic and MHD waves coming from convection zone; they may be generated instead by the perturbations originating from the different height over the photosphere.

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