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Recent Advances in Acoustic Heating

Published online by Cambridge University Press:  19 July 2016

P. Ulmschneider
P. Ulmschneider*
Affiliation:
Institut für Theoretische Astrophysik, Universität Heidelberg, Im Neuenheimer Feld 561 D-6900 Heidelberg, Federal Republic of Germany

Abstract

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Turbulent surface convection zones of stars generate acoustic waves which contribute to the heating of chromospheres and coronae. The dissipation of limiting strength acoustic shock waves agrees well with the empirically determined chromospheric radiation loss rates. Acoustic waves with frequency and energy required for the chromospheric heating are observed in the solar atmosphere. Acoustic heating can explain the basal chromospheric emission of slowly rotating stars and constitutes a weak background in faster rotating stars; it can not explain the emission-rotation correlation and the surface variation of emission which are due to magnetic heating.

Type
VI. Chromospheric and Coronal Heating
Information
Symposium - International Astronomical Union , Volume 142: Basic Plasma Processes on the Sun , 1990 , pp. 231 - 235
Copyright
Copyright © Kluwer 1990 

References

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