The Connection Between Umbral Oscillations and Penumbral Waves
Abstract
In this work we interpret the umbral oscillations and the penumbral waves as the same phenomenon. For the first time the connection between these two phenomena is explained theoretically, confirming some observational predictions. The periods calculated here agree very well with the observed ones.
- Publication:
-
Fourth Brazilian Meeting on Plasma Physics and the Sixth Brazilian Plasma Astrophysics Workshop
- Pub Date:
- January 1996
- Bibcode:
- 1996plas.work..121F
- Keywords:
-
- Magnetoacoustic Waves;
- Magnetohydrodynamic Waves;
- Magnetohydrodynamic Stability;
- Magnetohydrodynamic Flow;
- Oscillations;
- Magnetoacoustics;
- Magnetic Field Configurations;
- Magnetohydrodynamic Generators;
- Penumbras;
- Solar Physics