Magnetic structures and energy of 1989 March flares

S. T. Wu; F. S. Weng; H. M. Wang; H. Zirin; G. X. Ai

doi:10.1016/0273-1177(93)90468-Q

Magnetic structures and energy of 1989 March flares

S. T. Wu, F. S. Weng, H. M. Wang, H. Zirin, G. X. Ai

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2 Scopus citations

Abstract

We use a recently developed non-linear force-free model to analyze the magnetic structures and energy for 1989 March flares. In this analysis, we extrapolated the magnetic structure using the vector magnetograms obtained at Huairou Solar Observatory. In order to validate our extrapolated magnetic field topology, we compared our computed magnetic field results with H_α pictures obtained at Big Bear Solar Observatory. The results are presented for the evolution of the magnetic field structure (i.e. potential and non-linear force-free field), magnetic energy, and current distribution. It shows that the location of the occurrences of the flares are approximately related to the location of the high intensity of the currents. Further, we demonstrate that the amount of energy in force-free fields is more than adequate to power the flares.

Original language	English (US)
Pages (from-to)	127-130
Number of pages	4
Journal	Advances in Space Research
Volume	13
Issue number	9
DOIs	https://doi.org/10.1016/0273-1177(93)90468-Q
State	Published - Sep 1993
Externally published	Yes

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
General Earth and Planetary Sciences

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10.1016/0273-1177(93)90468-Q

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@article{54fe067f6f464eba8454c43904393e35,

title = "Magnetic structures and energy of 1989 March flares",

abstract = "We use a recently developed non-linear force-free model to analyze the magnetic structures and energy for 1989 March flares. In this analysis, we extrapolated the magnetic structure using the vector magnetograms obtained at Huairou Solar Observatory. In order to validate our extrapolated magnetic field topology, we compared our computed magnetic field results with Hα pictures obtained at Big Bear Solar Observatory. The results are presented for the evolution of the magnetic field structure (i.e. potential and non-linear force-free field), magnetic energy, and current distribution. It shows that the location of the occurrences of the flares are approximately related to the location of the high intensity of the currents. Further, we demonstrate that the amount of energy in force-free fields is more than adequate to power the flares.",

author = "Wu, {S. T.} and Weng, {F. S.} and Wang, {H. M.} and H. Zirin and Ai, {G. X.}",

note = "Funding Information: S. T. Wu and F. S. Weng were supported by NASA Headquarters Grant NAGW-9. Operation of BBSO is supported by NAGA Grant NAGW-1972 and NSF Grant ATM-9122023.",

year = "1993",

month = sep,

doi = "10.1016/0273-1177(93)90468-Q",

language = "English (US)",

volume = "13",

pages = "127--130",

journal = "Advances in Space Research",

issn = "0273-1177",

publisher = "Elsevier Limited",

number = "9",

}

TY - JOUR

T1 - Magnetic structures and energy of 1989 March flares

AU - Wu, S. T.

AU - Weng, F. S.

AU - Wang, H. M.

AU - Zirin, H.

AU - Ai, G. X.

N1 - Funding Information: S. T. Wu and F. S. Weng were supported by NASA Headquarters Grant NAGW-9. Operation of BBSO is supported by NAGA Grant NAGW-1972 and NSF Grant ATM-9122023.

PY - 1993/9

Y1 - 1993/9

N2 - We use a recently developed non-linear force-free model to analyze the magnetic structures and energy for 1989 March flares. In this analysis, we extrapolated the magnetic structure using the vector magnetograms obtained at Huairou Solar Observatory. In order to validate our extrapolated magnetic field topology, we compared our computed magnetic field results with Hα pictures obtained at Big Bear Solar Observatory. The results are presented for the evolution of the magnetic field structure (i.e. potential and non-linear force-free field), magnetic energy, and current distribution. It shows that the location of the occurrences of the flares are approximately related to the location of the high intensity of the currents. Further, we demonstrate that the amount of energy in force-free fields is more than adequate to power the flares.

AB - We use a recently developed non-linear force-free model to analyze the magnetic structures and energy for 1989 March flares. In this analysis, we extrapolated the magnetic structure using the vector magnetograms obtained at Huairou Solar Observatory. In order to validate our extrapolated magnetic field topology, we compared our computed magnetic field results with Hα pictures obtained at Big Bear Solar Observatory. The results are presented for the evolution of the magnetic field structure (i.e. potential and non-linear force-free field), magnetic energy, and current distribution. It shows that the location of the occurrences of the flares are approximately related to the location of the high intensity of the currents. Further, we demonstrate that the amount of energy in force-free fields is more than adequate to power the flares.

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U2 - 10.1016/0273-1177(93)90468-Q

DO - 10.1016/0273-1177(93)90468-Q

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SN - 0273-1177

VL - 13

SP - 127

EP - 130

JO - Advances in Space Research

JF - Advances in Space Research

IS - 9

ER -

Magnetic structures and energy of 1989 March flares

Abstract

All Science Journal Classification (ASJC) codes

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