Cooperative magnetographic and radioastronomical investigations of the active solar region AR 3804 in July 1982.
Abstract
An analysis of the radiation peculiar source in the active solar region AR 3804 is presented using the magnetograms obtained at ZIAP AW DDR in Potsdam. The source is on the border line of polarities of the photospheric magnetic field above the filament and has the flux spectrum increasing with the wavelength, the brightness temperature at 4 cm being above 6×106K, and the logarithm spectrum slope in the shortwave region (λ = 2 cm) being about n = 10. The polarization degree within 2 - 4 cm is close to 30%. An analysis of magnetograms of the total field vector showed that in the source region there is observed a density increase of the longitudinal current in the photosphere, this increase having different signs on different sides from the zero magnetic line. Near the source there is observed a magnetic field hill of the reverse polarity relative to the background field. It is suggested to relate the source with the magnetic loop of the "twisted" field in the corona in which the local energy emission and corona heating due to dissipation of magnetic fields of complex configuration occur (apparently, with the current sheet formation).
- Publication:
-
Astrofizicheskie Issledovaniia Izvestiya Spetsial'noj Astrofizicheskoj Observatorii
- Pub Date:
- 1989
- Bibcode:
- 1989AISAO..28..111A
- Keywords:
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- Solar Active Regions: Magnetic Fields;
- Solar Active Regions: Radio Radiation