Fine structure of the velocity field in an importance 2B/M2.3 flare
Babin, AN, Koval, AN |
Kinemat. fiz. nebesnyh tel (Online) 2010, 26(3):50-57 |
Language: Russian |
Abstract: The velocity field in the flare region during the impulsive phase of the solar flare with on 26 June 1999 was investigated. Spectral Hα observations of the flare with high temporal and spatial resolution were made on the coronograph KG-2 of the Crimean Astrophysical Observatory. We estimated the velocities using the bisector method. The following results were obtained: the velocity fields in the flare region and in the flare kernel during the impulsive phase are very complicated, have fine structure and vary rapidly with time. Different flare elements exhibit line shifts of different magnitude and even of different directions. These facts indicate that the local Doppler motions exist in the fine structural flare elements. |
Keywords: solar flare |