Photospheric velocity field and flares in an active region.
Abstract
The manifestation of flare activity in the field of photospheric velocities of the active region on September 2 - 8, 1961 has been studied. Radial velocities were observed using the Fe I λ525.0 nm line with the magnetograph of the Crimean Astrophysical Observatory. It has been shown that the flares appear mainly on the zero line of radial velocities. Here plasma rotates in the same direction as the adjacent large sunspot. The flare appearance in the sunspot itself is accompanied by an increase of the plasma ascent velocity.
- Publication:
-
Kinematika i Fizika Nebesnykh Tel
- Pub Date:
- February 1988
- Bibcode:
- 1988KFNT....4...92G
- Keywords:
-
- Magnetohydrodynamic Flow;
- Photosphere;
- Radial Velocity;
- Solar Flares;
- Velocity Distribution;
- Line Spectra;
- Rotating Plasmas;
- Solar Spectra;
- Vertical Motion;
- Solar Physics;
- Radial Velocities:Solar Flares;
- Solar Flares:Radial Velocities;
- Solar Flares:Velocities;
- Velocities:Solar Flares