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Radiative Damping of Gravity Waves in the Solar Atmosphere

Published online by Cambridge University Press:  12 April 2016

Jerry D. Logan  and
Henry A. Hill
Jerry D. Logan
Affiliation:
Department of Physics University of Arizona Tucson, Arizona 85721
Henry A. Hill
Affiliation:
Department of Physics University of Arizona Tucson, Arizona 85721

Abstract

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The nonlocal character of the radiation field sinnificantly modifies the radiative damping of perturbations in the solar photosphere. Gravity waves are not usually considered to exist in the solar photosphere because the radiative damping time, when based on the Newtonian approximation, is too short. However, this restriction does not apply to low order gravity waves. In fact, with the inclusion of nonlocal effects, the radiative damping for low order gravity waves becomes negative for some region in the photosphere and thus acts as a driving mechanism for gravity waves there.

Type
II. Solar Pulsations
Information
International Astronomical Union Colloquium , Volume 58: Stellar Hydrodynamics , August 1980 , pp. 301 - 306
Copyright
Copyright © Reidel 1980

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