Abstract
We investigate nonadiabatic hydrodynamic waves in a nongrey, radiating, thermally conducting, homogeneous atmosphere in LTE with a finite mean free path of photons. Avoiding the Eddington approximation the remaining simplifications in the basic equations are discussed, the generalized dispersion relation is analysed, and some wave properties in a grey model are studied. The properties of waves in a stratified atmosphere are analysed as well. In connection with the predicted properties of the nonadiabatic waves we discuss observations ofp-modes by measuring brightness fluctuations.
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Staude, J., Dzhalilov, N.S. & Zhugzhda, Y.D. Radiation-hydrodynamic waves and global solar oscillations. Sol Phys 152, 227–239 (1994). https://doi.org/10.1007/BF01473209
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DOI: https://doi.org/10.1007/BF01473209