Radio spectrum of a solar active region.
Abstract
The radio spectrum of the A.R. (active region) 2490, in the range of wavelengths between 8 mm and 20 cm, is presented. The A.R. presents a double structure at λ ≥ 2.8 cm. It is shown that gyroresonance absorption at λ = 6 cm, which is the main source of opacity in the portion of the A.R. overhanging the sunspots, plays an important role also in the radio source associated with the Hα plage.
- Publication:
-
Scientia Sinica Series Mathematical Physical Technical Sciences
- Pub Date:
- 1987
- Bibcode:
- 1987SSSMP..30.1199C
- Keywords:
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- Radio Spectra:Solar Active Regions;
- Solar Active Regions:Radio Spectra