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Magnetic field evolution leading to solar flares II. Cases with high magnetic shear and flare-related shear change
Li, H; Sakurai, T; Ichimoto, K; UeNo, S
2000
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
Volume52Issue:3Pages:483-497
AbstractFollowing Paper I in which we considered five solar flares: we have selected another three solar flares greater than GOES X-ray class M/H alpha importance 1. The three active regions discussed here are characterized by high magnetic shear. We investigated the spatial relationships among Her flare ribbons, soft X-ray (SXR) hare loops, and magnetic configurations for the three flares produced in these active regions. Our results show that only one of these three flares satisfies the sufficient conditions for a flare to occur proposed by Hagyard (1990, AAA 052.075.047). We also discuss the magnetic shear changes around the flaring time only along the neutral lines associated with the studied flares and over the whole flaring area. The flare-related changes on the neutral line are small (2 degrees-4 degrees) and the association of these changes with the hares is not conclusive. The average shear in the flaring areas of the flares associated with high shear decreases significantly after the flares and it may be a better parameter to characterize the hare-related shear changes in such cases.
KeywordSun : Flares Sun : Magnetic Fields Sun : X-rays
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordX-RAY TELESCOPE ; ACTIVE-REGION ; A MISSION ; JUNE 1991 ; CONFIGURATION ; CURRENTS ; SYSTEM
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000088014000009
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15991
Collection太阳高能及相关物理过程研究团组
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Natl Astron Observ, Mitaka, Tokyo 1818588, Japan
3.Kyoto Univ, Hida Observ, Gifu 5061317, Japan
Recommended Citation
GB/T 7714
Li, H,Sakurai, T,Ichimoto, K,et al. Magnetic field evolution leading to solar flares II. Cases with high magnetic shear and flare-related shear change[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2000,52(3):483-497.
APA Li, H,Sakurai, T,Ichimoto, K,&UeNo, S.(2000).Magnetic field evolution leading to solar flares II. Cases with high magnetic shear and flare-related shear change.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,52(3),483-497.
MLA Li, H,et al."Magnetic field evolution leading to solar flares II. Cases with high magnetic shear and flare-related shear change".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 52.3(2000):483-497.
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