Hydromagnetic waves in the solar plasma as inferred from Helios remote sensing data
Abstract
The fine structure of periodicity during solar occultations is inferred from the temporal variations of columnar electron content measurements made by the Helios space probes. A maximum entropy spectral analysis reveals significant frequency peaks within the range 0.2 to 3 mHz. A comparison with Helios Faraday rotation measurements indicates hydromagnetic waves. This can be regarded as experimental evidence that such waves exist in the solar corona with a typical fundamental period of 1 hr.
- Publication:
-
In DFVLR Contrib. to the Colloq. on High Frequency Technol. in Aerospace Res. p 45-54 (SEE N81-26318 17-32
- Pub Date:
- June 1980
- Bibcode:
- 1980hfta.coll...45E
- Keywords:
-
- Electron Flux Density;
- Magnetohydrodynamic Waves;
- Solar Corona;
- Solar Wind;
- Faraday Effect;
- Helios A;
- Helios B;
- Maximum Entropy Method;
- Periodic Variations;
- Solar Eclipses;
- Communications and Radar