The line-of-sight velocities of the photospheric material motions in a weak and large solar flares

Details The line-of-sight velocities of the photospheric material motions in a weak and large solar flares The line-of-sight velocities of the photospheric material motions in a weak and large solar flares

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003kfnt...19...21k&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, vol. 19, no. 1, p. 21-27

Physics

Scientific paper

The dependencies of the line-of-sight velocities of the photospheric material motion on height are given for four moments of the observation of the gradual phase of a weak flare and for a large two-ribbon flare at different stages of its evolution: 30 minutes before the flare, in the impulsive and gradual phases. A downward motion of the photospheric material was observed in the gradual phase of the weak flare. Possibly, the downflow was a response to the chromospheric condensation. A new magnetic flux emerge occurred in the large flare. The velocity of the upward motion of the photospheric material was equal to 1--4 km/s.

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