On the visibility of low frequency nonradial pulsations for a grey solar atmosphere
Abstract
The visibility of low-frequency nonradial solar oscillations with respect to their degree and frequency is examined in the framework of ground-based and space-based helioseismology experiments. Two effects leading to the variation of the observed flux are examined: wave-induced temperature variation and opacity variation. The effect of the wave-induced opacity perturbation on the intensity fluctuation of gravity modes is considered in the grey-atmosphere approximation for both adiabatic and nonadiabatic modes.
- Publication:
-
Advances in Space Research
- Pub Date:
- 1991
- DOI:
- 10.1016/0273-1177(91)90437-O
- Bibcode:
- 1991AdSpR..11d..39P
- Keywords:
-
- Gravity Waves;
- Low Frequencies;
- Radiative Transfer;
- Solar Atmosphere;
- Solar Oscillations;
- Frequency Distribution;
- Helioseismology;
- Stellar Models;
- Vibration Mode;
- Solar Physics