Emission during the Eruption of
a Filament Two-Ribbon
H Emission during the Eruption of
a Filament
B. P. Filippov
Institute of
Terrestrial Magnetism, Aeronomy, and Radiowave Propagation,
Russian Academy of Sciences,
Troitsk, Moscow oblast, 142092, Russia
Received June 20, 1996
Abstract—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 H
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 H in
two-ribbon flares.
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