The determination of the electric currents regarding the vertical component of the magnetic field and Hα fibrils.
Abstract
The vertical component of the electric currents, being displayed as a sum of items, connected with the turnoff of the potential field vector and the change of its length permitted to obtain information about the structure and the value of the current on the basis of the available observational data: the vertical component Hz of the magnetic field and Hα pictures. A satisfactory agreement of the current structures, computed by the suggested method and by the observational data of the transverse magnetic field in the photosphere is attained. The assumption, that the twist of the field with height (or its stable orientation) is constant, allowed to compute the currents at the altitudes up to 50000 km. The electric currents in the active regions decrease with height faster, than the magnetic flux of the potential field. It is concluded, that in the active region there exists a system of current loops of different height. With the increase of the magnetic loop height, its structure tends to potential.
- Publication:
-
Izvestiya Ordena Trudovogo Krasnogo Znameni Krymskoj Astrofizicheskoj Observatorii
- Pub Date:
- 1988
- Bibcode:
- 1988IzKry..80...97A
- Keywords:
-
- Solar Chromosphere: Electric Fields;
- Solar Magnetic Fields