Forced magnetic reconnection at a neutral X-point

G. Vekstein; N. Bian

doi:10.1086/497690

Forced magnetic reconnection at a neutral X-point

G. Vekstein, N. Bian

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

Abstract

The response of a two-dimensional X-type neutral point magnetic field to a quasi-static perturbation is considered. The latter is specified by a redistribution of the magnetic flux at a circular boundary centered on the neutral point. A special role of the dipole (m = 1) azimuthal perturbation component is revealed as the only one that results in the formation of a current sheet and subsequent magnetic reconnection. The excess magnetic energy released by such reconnective relaxation is also derived. © 2005. The American Astronomical Society. All rights reserved.

Original language	English
Pages (from-to)	L151-L154
Journal	Astrophysical Journal
Volume	632
Issue number	2
DOIs	https://doi.org/10.1086/497690
Publication status	Published - 20 Oct 2005

Keywords

Magnetic fields
MHD
Plasmas
Sun: corona
Sun: magnetic fields

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10.1086/497690

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abstract = "The response of a two-dimensional X-type neutral point magnetic field to a quasi-static perturbation is considered. The latter is specified by a redistribution of the magnetic flux at a circular boundary centered on the neutral point. A special role of the dipole (m = 1) azimuthal perturbation component is revealed as the only one that results in the formation of a current sheet and subsequent magnetic reconnection. The excess magnetic energy released by such reconnective relaxation is also derived. {\textcopyright} 2005. The American Astronomical Society. All rights reserved.",

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AU - Bian, N.

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N2 - The response of a two-dimensional X-type neutral point magnetic field to a quasi-static perturbation is considered. The latter is specified by a redistribution of the magnetic flux at a circular boundary centered on the neutral point. A special role of the dipole (m = 1) azimuthal perturbation component is revealed as the only one that results in the formation of a current sheet and subsequent magnetic reconnection. The excess magnetic energy released by such reconnective relaxation is also derived. © 2005. The American Astronomical Society. All rights reserved.

AB - The response of a two-dimensional X-type neutral point magnetic field to a quasi-static perturbation is considered. The latter is specified by a redistribution of the magnetic flux at a circular boundary centered on the neutral point. A special role of the dipole (m = 1) azimuthal perturbation component is revealed as the only one that results in the formation of a current sheet and subsequent magnetic reconnection. The excess magnetic energy released by such reconnective relaxation is also derived. © 2005. The American Astronomical Society. All rights reserved.

KW - Magnetic fields

KW - MHD

KW - Plasmas

KW - Sun: corona

KW - Sun: magnetic fields

U2 - 10.1086/497690

DO - 10.1086/497690

M3 - Article

SN - 1538-4357

VL - 632

SP - L151-L154

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Forced magnetic reconnection at a neutral X-point

Abstract

Keywords

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