Rapid changes in the longitudinal magnetic field related to the 2001 April 2 X20 flare

Thomas J. Spirock; Vasyl Yurchyshyn; Haimin Wang

doi:10.1086/340431

Rapid changes in the longitudinal magnetic field related to the 2001 April 2 X20 flare

Thomas J. Spirock, Vasyl Yurchyshyn, Haimin Wang

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66 Scopus citations

Abstract

Big Bear Solar Observatory observed the X20 flare that occurred at approximately 21:50 UT on 2001 April 2 with its standard complement of instruments. In this paper, we discuss the evolution of high-resolution and high-cadence longitudinal magnetograph observations in the region of the flare. The data reveal that there was a significant increase in the magnetic field on the limbward side of the neutral line of the active region at the location of the flare, while the magnetic field on the side of the neutral line closer to the disk center remained constant. We discuss possible rearrangements in the active region's magnetic field that could lead to the observed changes.

Original language	English (US)
Pages (from-to)	1072-1076
Number of pages	5
Journal	Astrophysical Journal
Volume	572
Issue number	2 I
DOIs	https://doi.org/10.1086/340431
State	Published - Jun 20 2002

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Sun: flares
Sun: magnetic fields

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10.1086/340431

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title = "Rapid changes in the longitudinal magnetic field related to the 2001 April 2 X20 flare",

abstract = "Big Bear Solar Observatory observed the X20 flare that occurred at approximately 21:50 UT on 2001 April 2 with its standard complement of instruments. In this paper, we discuss the evolution of high-resolution and high-cadence longitudinal magnetograph observations in the region of the flare. The data reveal that there was a significant increase in the magnetic field on the limbward side of the neutral line of the active region at the location of the flare, while the magnetic field on the side of the neutral line closer to the disk center remained constant. We discuss possible rearrangements in the active region's magnetic field that could lead to the observed changes.",

keywords = "Sun: flares, Sun: magnetic fields",

author = "Spirock, {Thomas J.} and Vasyl Yurchyshyn and Haimin Wang",

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T1 - Rapid changes in the longitudinal magnetic field related to the 2001 April 2 X20 flare

AU - Spirock, Thomas J.

AU - Yurchyshyn, Vasyl

AU - Wang, Haimin

PY - 2002/6/20

Y1 - 2002/6/20

N2 - Big Bear Solar Observatory observed the X20 flare that occurred at approximately 21:50 UT on 2001 April 2 with its standard complement of instruments. In this paper, we discuss the evolution of high-resolution and high-cadence longitudinal magnetograph observations in the region of the flare. The data reveal that there was a significant increase in the magnetic field on the limbward side of the neutral line of the active region at the location of the flare, while the magnetic field on the side of the neutral line closer to the disk center remained constant. We discuss possible rearrangements in the active region's magnetic field that could lead to the observed changes.

AB - Big Bear Solar Observatory observed the X20 flare that occurred at approximately 21:50 UT on 2001 April 2 with its standard complement of instruments. In this paper, we discuss the evolution of high-resolution and high-cadence longitudinal magnetograph observations in the region of the flare. The data reveal that there was a significant increase in the magnetic field on the limbward side of the neutral line of the active region at the location of the flare, while the magnetic field on the side of the neutral line closer to the disk center remained constant. We discuss possible rearrangements in the active region's magnetic field that could lead to the observed changes.

KW - Sun: flares

KW - Sun: magnetic fields

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DO - 10.1086/340431

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SN - 0004-637X

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EP - 1076

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 I

ER -

Rapid changes in the longitudinal magnetic field related to the 2001 April 2 X20 flare

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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