Energetics of the 18 May 1994 brightening event

Y. H. Tang; Y. N. Li; C. Fang; B. Schmieder; G. Aulanier; P. Demoulin

doi:10.1016/S0273-1177(02)00342-3

Energetics of the 18 May 1994 brightening event

Y. H. Tang, Y. N. Li, C. Fang, B. Schmieder, G. Aulanier, P. Demoulin

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

Abstract

By using YOHKOH soft X-ray images, vector magnetograms and Hα filtergrams, the energetics of the brightening event of May 18, 1994 has been studied. It occurred in a nearly potential magnetic configuration as shown by the comparison between the magnetic extrapolation (linear force free field) and the large scale soft X-ray loops. This event is related to the emergence of a new magnetic flux. The brightening points of Hα and soft X-ray are located at computed separatrices associated with field lines which are tangent to the photosphere. This brightening may be a signature of reconnection taking place between the pre-existing non-potential loops and the new emerging small loops. The magnetic energy provided by reconnection is likely to be stored in the non-potential loops and shearing emerging flux. A phenomenological model is offered.

Original language	English
Pages (from-to)	557-560
Number of pages	4
Journal	Advances in Space Research
Volume	30
Issue number	3
DOIs	https://doi.org/10.1016/S0273-1177(02)00342-3
Publication status	Published - 1 Jan 2002
Externally published	Yes

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title = "Energetics of the 18 May 1994 brightening event",

abstract = "By using YOHKOH soft X-ray images, vector magnetograms and Hα filtergrams, the energetics of the brightening event of May 18, 1994 has been studied. It occurred in a nearly potential magnetic configuration as shown by the comparison between the magnetic extrapolation (linear force free field) and the large scale soft X-ray loops. This event is related to the emergence of a new magnetic flux. The brightening points of Hα and soft X-ray are located at computed separatrices associated with field lines which are tangent to the photosphere. This brightening may be a signature of reconnection taking place between the pre-existing non-potential loops and the new emerging small loops. The magnetic energy provided by reconnection is likely to be stored in the non-potential loops and shearing emerging flux. A phenomenological model is offered.",

author = "Tang, \{Y. H.\} and Li, \{Y. N.\} and C. Fang and B. Schmieder and G. Aulanier and P. Demoulin",

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doi = "10.1016/S0273-1177(02)00342-3",

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TY - JOUR

T1 - Energetics of the 18 May 1994 brightening event

AU - Tang, Y. H.

AU - Li, Y. N.

AU - Fang, C.

AU - Schmieder, B.

AU - Aulanier, G.

AU - Demoulin, P.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - By using YOHKOH soft X-ray images, vector magnetograms and Hα filtergrams, the energetics of the brightening event of May 18, 1994 has been studied. It occurred in a nearly potential magnetic configuration as shown by the comparison between the magnetic extrapolation (linear force free field) and the large scale soft X-ray loops. This event is related to the emergence of a new magnetic flux. The brightening points of Hα and soft X-ray are located at computed separatrices associated with field lines which are tangent to the photosphere. This brightening may be a signature of reconnection taking place between the pre-existing non-potential loops and the new emerging small loops. The magnetic energy provided by reconnection is likely to be stored in the non-potential loops and shearing emerging flux. A phenomenological model is offered.

AB - By using YOHKOH soft X-ray images, vector magnetograms and Hα filtergrams, the energetics of the brightening event of May 18, 1994 has been studied. It occurred in a nearly potential magnetic configuration as shown by the comparison between the magnetic extrapolation (linear force free field) and the large scale soft X-ray loops. This event is related to the emergence of a new magnetic flux. The brightening points of Hα and soft X-ray are located at computed separatrices associated with field lines which are tangent to the photosphere. This brightening may be a signature of reconnection taking place between the pre-existing non-potential loops and the new emerging small loops. The magnetic energy provided by reconnection is likely to be stored in the non-potential loops and shearing emerging flux. A phenomenological model is offered.

U2 - 10.1016/S0273-1177(02)00342-3

DO - 10.1016/S0273-1177(02)00342-3

M3 - Article

AN - SCOPUS:0036367232

SN - 0273-1177

VL - 30

SP - 557

EP - 560

JO - Advances in Space Research

JF - Advances in Space Research

IS - 3

ER -

Energetics of the 18 May 1994 brightening event

Abstract

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