Photospheric velocity field and flares in the active region

Details Photospheric velocity field and flares in the active region Photospheric velocity field and flares in the active region

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988kfnt....4...92g&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 4, Jan.-Feb. 1988, p. 92-94, 96. In Russian.

Astronomy and Astrophysics

Astrophysics

Magnetohydrodynamic Flow, Photosphere, Radial Velocity, Solar Flares, Velocity Distribution, Line Spectra, Rotating Plasmas, Solar Spectra, Vertical Motion

Scientific paper

The manifestation of flare activity in the field of photospheric velocities of the active region on Sept. 2-8, 1961 has been studied. Radial velocities were observed using the Fe I 525.0 A 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.

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