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The ?Melon-seed? Mechanism and Coronal Transients by G. W. Pneuman is a Physics and Astronomy article available to read on EtoBox.
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Adopting the point of view that a coronal transient is a defined magnetic structure, it must be diamagnetic with respect to the external ambient magnetic field, i.e., the external fieldlines cannot penetrate the structure. If this is so, an integral approach involving only external forces can be very useful for studying the conditions for acceleration and large-scale dynamical behavior of the transient. After a discussion of a suggested transient configuration based upon observations of prominences, f~are loops, and transient -filament relative orientations observed by Trottet and MacQueen (1980), we demonstrate the diamagnetic approach to this problem through a particularly simplified model. Necessary conditions for upward acceleration of the transient are discussed in some detail. One such plausible initiation mechanism is shown to be a constriction of the structure near its base by the external forces. This mechanism not only can provide the upward acceleration for the transient but is also compatible with the observation of hot rising flare loops during two-ribbon flare which show evidence for magnetic reconnection. We have studied the equilibrium conditions and dynamical behav
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- Author
- G. W. Pneuman
- Publisher
- Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC (ISSN 0038-0938)
- Published
- 1984
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)