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Title: On the eruption of prominences and disappearance of quiescent filaments
Authors: Singh, J
Gupta, S. S
Keywords: Dynamic Stability;Solar Physics;Solar Prominences;Sun;Thermal Stability;Chromosphere;H Alpha Line;Heating;Solar X-Rays
Issue Date: May-1995
Publisher: Springer
Citation: Solar Physics, Vol. 158, No. 2, pp. 259 - 268
Abstract: We suggest the following heuristic model for the evolution of a quiescent filament. The middle part of the filament rises due to heating, while its ends remain anchored in the chromosphere; and a kink appears in the H alpha filament due to projection and line-of-sight effects. Further, the top segment of the filament rises rapidly above the solar surface 1-2 days before the disappearance of a filament or eruption of a prominence. The top of the filament attains a high temperature due to further heating, thereby becoming invisible in H alpha, giving the impression that the filament has slit into two parts. It is expected that this gap between the H alpha filament can be seen in the observations in high-temperature lines and soft X-rays.
ISSN: 0038-0938
Appears in Collections:IIAP Publications

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