Does the Sun ring?
Abstract
An investigation of solar oscillations is proposed, whereby small velocity perturbations of the surface layers are studied in order to measure sound waves (or phonons) in the solar atmosphere. Such observations would also provide information on the solar interior. Excitation mechanisms include shocks from the core due to uneven or explosive nuclear burning, and flares from the surface with energies on the order of 10 to the 23rd J for a photospheric velocity amplitude of 1 m/sec. Fraunhofer absorption lines are used as indicators of Doppler shifts to evaluate velocity noise. Attention is given to detailed observations of solar cells, where oscillation is more pronounced than on the sun as a whole. It is pointed out that oscillations occurring on the sun probably occur on most, if not all, other stars.
- Publication:
-
Physics Bulletin
- Pub Date:
- March 1978
- Bibcode:
- 1978PhB....29..127I
- Keywords:
-
- Solar Activity Effects;
- Solar Atmosphere;
- Surface Layers;
- Velocity Measurement;
- Acoustic Velocity;
- Astronomical Models;
- Fraunhofer Lines;
- Oscillations;
- Seismic Waves;
- Solar Cells;
- Solar Flares;
- Solar Interior;
- Sound Waves;
- Solar Physics;
- Oscillations:Sun