Two-ribbon Hα emission during the eruption of a filament

Details Two-ribbon Hα emission during the eruption of a filament Two-ribbon Hα emission during the eruption of a filament

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997arep...41..562f&link_type=abstract

Astronomy Reports, Volume 41, Issue 4, July 1997, pp.562-566

Astronomy and Astrophysics

Astronomy

Scientific paper

Frozen-in motions of chromospheric plasma during the eruption of a filament with a magnetic field configuration described by an inverse-polarity model are considered. When the filament begins its motion, the field compresses the chromospheric gas within two bands located symmetrically with respect to the neutral line dividing the polarities. The compression is accompanied by heating of the plasma and enhanced Hα emission. As the filament rises above the chromosphere, the band separation grows. Estimates indicate that this mechanism may be able to describe the dynamics of sites of Hα in two-ribbon flares.

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