An empirical model of the small-scale magnetic element in the quiet region of the Sun.
Abstract
The magnetographic observations of longitudinal magnetic fields with high spatial resolution (1x1 and 1x2 seconds of arc) were analysed. The data were taken with a magnetograph using six magnetosensitive lines: Fe I λλ480.8, 523.3, 525.0, 525.3, 630.2 nm and Mg I λ518.4 nm. The data were interpreted by the two-component model, which includes the spatially unresolved flux tubes and background fields. It is shown that the magnetic field strength in flux tubes is 220 mT at the formation level of the line Fe I λ525.0 nm. The magnetic field profile in flux tubes is considerably steeper than in spots. The profiles of spectral lines in flux tubes are 30 - 40% narrower than the undisturbed profiles and have weakened wings that evidences for a decrease of the gas pressure. The diameter of flux tubes is no more than 40-50 km.
- Publication:
-
Kinematika i Fizika Nebesnykh Tel
- Pub Date:
- February 1989
- Bibcode:
- 1989KFNT....5...50L
- Keywords:
-
- Astronomical Models;
- Solar Activity;
- Solar Magnetic Field;
- Background Radiation;
- Field Strength;
- Gas Pressure;
- Solar Spectra;
- Spatial Resolution;
- Sunspots;
- Solar Physics;
- Solar Magnetic Fields: Quiet Sun;
- Solar Magnetic Fields: Magnetic Flux Tubes