Radiative Relaxation of Sound Waves in an Optically Thin Isothermal Atmosphere
Abstract
The radiative damping of oscillatory modes in an optically thin isothermal atmosphere is investigated within the approximation of Newton's law of cooling (Sections I-Il). Special attention is paid to vertical modes sustained by harmonic boundary conditions (III) and to the discussion of the validity of the adiabatic and isothermal limiting cases. The influence of relaxation on the response of an infinite model to an applied body-force is studied in the one-dimensional case (W). Application to the solar conditions indicates that the dissipation in the chromosphere has little effect on the dynamics of the chromospheric oscillation (V). Key words: stellar atmospheres - the sun
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- March 1972
- Bibcode:
- 1972A&A....17..458S