The stability of magnetic fields relevant to two-ribbon flares

A. W. Hood

doi:10.1016/0273-1177(84)90158-3

The stability of magnetic fields relevant to two-ribbon flares

A. W. Hood^*

^*Corresponding author for this work

Applied Mathematics

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

Abstract

The preflare structure, prior to two-ribbon flares, is thought to consist of magnetic field arcades. As a first approximation, the magnetic field is assumed to be invariant along the length of the arcade. The ideal MHD stability of such structures is studied using the energy method. The dense photosphere is simulated by line-typing the magnetic field and a discussion of boundary conditions is presented. Using the energy method, sufficient conditions for stability are obtained for certain magnetohydrostatic fields that also include the effect of gravity. Under certain circumstances, these conditions become necessary and sufficient. Some comments on resistive effects are mentioned.

Original language	English
Pages (from-to)	49-52
Number of pages	4
Journal	Advances in Space Research
Volume	4
Issue number	7
DOIs	https://doi.org/10.1016/0273-1177(84)90158-3
Publication status	Published - 1984

Keywords

Magnetic Field Configurations
Magnetohydrodynamic Stability
Solar Flares
Solar Magnetic Field
Boundary Conditions
Boundary Value Problems
Electrical Resistivity
Energy Transfer
Gravitational Effects
Photosphere

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10.1016/0273-1177(84)90158-3

http://adsabs.harvard.edu/abs/1984AdSpR...4g..49H

Cite this

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title = "The stability of magnetic fields relevant to two-ribbon flares",

abstract = "The preflare structure, prior to two-ribbon flares, is thought to consist of magnetic field arcades. As a first approximation, the magnetic field is assumed to be invariant along the length of the arcade. The ideal MHD stability of such structures is studied using the energy method. The dense photosphere is simulated by line-typing the magnetic field and a discussion of boundary conditions is presented. Using the energy method, sufficient conditions for stability are obtained for certain magnetohydrostatic fields that also include the effect of gravity. Under certain circumstances, these conditions become necessary and sufficient. Some comments on resistive effects are mentioned.",

keywords = "Magnetic Field Configurations, Magnetohydrodynamic Stability, Solar Flares, Solar Magnetic Field, Boundary Conditions, Boundary Value Problems, Electrical Resistivity, Energy Transfer, Gravitational Effects, Photosphere",

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year = "1984",

doi = "10.1016/0273-1177(84)90158-3",

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T1 - The stability of magnetic fields relevant to two-ribbon flares

AU - Hood, A. W.

PY - 1984

Y1 - 1984

N2 - The preflare structure, prior to two-ribbon flares, is thought to consist of magnetic field arcades. As a first approximation, the magnetic field is assumed to be invariant along the length of the arcade. The ideal MHD stability of such structures is studied using the energy method. The dense photosphere is simulated by line-typing the magnetic field and a discussion of boundary conditions is presented. Using the energy method, sufficient conditions for stability are obtained for certain magnetohydrostatic fields that also include the effect of gravity. Under certain circumstances, these conditions become necessary and sufficient. Some comments on resistive effects are mentioned.

AB - The preflare structure, prior to two-ribbon flares, is thought to consist of magnetic field arcades. As a first approximation, the magnetic field is assumed to be invariant along the length of the arcade. The ideal MHD stability of such structures is studied using the energy method. The dense photosphere is simulated by line-typing the magnetic field and a discussion of boundary conditions is presented. Using the energy method, sufficient conditions for stability are obtained for certain magnetohydrostatic fields that also include the effect of gravity. Under certain circumstances, these conditions become necessary and sufficient. Some comments on resistive effects are mentioned.

KW - Magnetic Field Configurations

KW - Magnetohydrodynamic Stability

KW - Solar Flares

KW - Solar Magnetic Field

KW - Boundary Conditions

KW - Boundary Value Problems

KW - Electrical Resistivity

KW - Energy Transfer

KW - Gravitational Effects

KW - Photosphere

U2 - 10.1016/0273-1177(84)90158-3

DO - 10.1016/0273-1177(84)90158-3

M3 - Article

AN - SCOPUS:48749140797

SN - 0273-1177

VL - 4

SP - 49

EP - 52

JO - Advances in Space Research

JF - Advances in Space Research

IS - 7

ER -

The stability of magnetic fields relevant to two-ribbon flares

Abstract

Keywords

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