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OBSERVATIONAL EVIDENCE OF CHANGING PHOTOSPHERIC VECTOR MAGNETIC FIELDS ASSOCIATED WITH SOLAR FLARES
Su, J. T.1,2; Jing, J.1; Wang, H. M.1; Mao, X. J.2,3; Wang, X. F.2; Zhang, H. Q.2; Deng, Y. Y.2; Guo, J.2; Wang, G. P.2
2011-06-01
Source PublicationASTROPHYSICAL JOURNAL
Volume733Issue:2
AbstractRecent observations have provided evidence that the solar photospheric magnetic fields could have rapid and permanent changes in both longitudinal and transverse components associated with major flares. As a result, the Lorentz force (LF) acting on the solar photosphere and solar interior could be perturbed, and the change of LF is always nearly in the downward direction. However, these rapid and permanent changes have not been systematically investigated, yet, using vector magnetograms. In this paper, we analyze photospheric vector magnetograms covering five flares to study the evolution of photospheric magnetic fields. In particular, we investigate two-dimensional spatial distributions of the changing LF. Around the major flaring polarity inversion line, the net change of the LF is directed downward in an area of similar to 10(19) cm(2) for X-class flares. For all events, the white-light observations show that sunspots darken in this location after flares, and magnetic fields become more inclined, which is consistent with the ideas put forward by Hudson et al. and Fisher et al., and observations.
KeywordSun: Activity Sun: Flares Sun: Magnetic Topology Sun: Surface Magnetism
DOI10.1088/0004-637X/733/2/94
Indexed BySCI
Language英语
WOS IDWOS:000290676100021
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7899
Collection太阳物理研究部
Affiliation1.New Jersey Inst Technol, Space Weather Res Lab, Newark, NJ 07102 USA
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
3.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Su, J. T.,Jing, J.,Wang, H. M.,et al. OBSERVATIONAL EVIDENCE OF CHANGING PHOTOSPHERIC VECTOR MAGNETIC FIELDS ASSOCIATED WITH SOLAR FLARES[J]. ASTROPHYSICAL JOURNAL,2011,733(2).
APA Su, J. T..,Jing, J..,Wang, H. M..,Mao, X. J..,Wang, X. F..,...&Wang, G. P..(2011).OBSERVATIONAL EVIDENCE OF CHANGING PHOTOSPHERIC VECTOR MAGNETIC FIELDS ASSOCIATED WITH SOLAR FLARES.ASTROPHYSICAL JOURNAL,733(2).
MLA Su, J. T.,et al."OBSERVATIONAL EVIDENCE OF CHANGING PHOTOSPHERIC VECTOR MAGNETIC FIELDS ASSOCIATED WITH SOLAR FLARES".ASTROPHYSICAL JOURNAL 733.2(2011).
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