The stability of line tied force-free cylindrical arcades: Is an active region filament a requirement for a two-ribbon flare?

A. Hood; U. Anzer

doi:10.1007/BF00148524

The stability of line tied force-free cylindrical arcades: Is an active region filament a requirement for a two-ribbon flare?

A. Hood^*, U. Anzer

^*Corresponding author for this work

Applied Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

The MHD stability of force-free, cylindrical arcades is investigated, including the stabilising effect of photospheric line tying. It is found that a wide variety of fields are stable. This suggests that either a departure from a force free equilibrium or suppression of line tying is necessary if a two-ribbon flare is to be triggered. It is postulated that in both circumstances, the existence of an active region filament is an essential preflare requirement for a two-ribbon flare.

Original language	English
Pages (from-to)	333-346
Number of pages	14
Journal	Solar Physics
Volume	111
Issue number	2
DOIs	https://doi.org/10.1007/BF00148524
Publication status	Published - 1 Sept 1987

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title = "The stability of line tied force-free cylindrical arcades: Is an active region filament a requirement for a two-ribbon flare?",

abstract = "The MHD stability of force-free, cylindrical arcades is investigated, including the stabilising effect of photospheric line tying. It is found that a wide variety of fields are stable. This suggests that either a departure from a force free equilibrium or suppression of line tying is necessary if a two-ribbon flare is to be triggered. It is postulated that in both circumstances, the existence of an active region filament is an essential preflare requirement for a two-ribbon flare.",

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AB - The MHD stability of force-free, cylindrical arcades is investigated, including the stabilising effect of photospheric line tying. It is found that a wide variety of fields are stable. This suggests that either a departure from a force free equilibrium or suppression of line tying is necessary if a two-ribbon flare is to be triggered. It is postulated that in both circumstances, the existence of an active region filament is an essential preflare requirement for a two-ribbon flare.

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The stability of line tied force-free cylindrical arcades: Is an active region filament a requirement for a two-ribbon flare?

Abstract

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