Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263..386m&link_type=abstract
Astrophysical Journal, Part 1, vol. 263, Dec. 1, 1982, p. 386-408.
Astronomy and Astrophysics
Astrophysics
36
Chromosphere, Gravity Waves, Solar Atmosphere, Atmospheric Models, Atmospheric Turbulence, Damping, Eigenvectors, Flow Equations, Height, Perturbation, Radiative Heat Transfer
Scientific paper
In the solar photosphere, temperature fluctuations associated with acoustic-gravity waves may be rapidly smoothed by the transfer mechanism of radiation between hotter and cooler regions. The present investigation of the radiative effects on internal gravity waves takes into account the parameterization of the radiative energy, employing the Newtonian cooling approximation. A linear analysis of the propagation of internal gravity waves is carried out in a model of the solar atmosphere which is taken to be homogeneous in the horizontal coordinates. Linear wave properties both with and without radiative cooling are summarized, and the variation with height of energy fluxes and of nonlinearities in the waves is discussed. Attention is given to the significance of the obtained results in terms of energy balance in the chromosphere and in relation to spectral line observations.
Mihalas Barbara Weibel
Toomre Juri
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