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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
发表期刊ASTROPHYSICAL JOURNAL
卷号733期号:2
摘要Recent 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.
关键词Sun: Activity Sun: Flares Sun: Magnetic Topology Sun: Surface Magnetism
DOI10.1088/0004-637X/733/2/94
收录类别SCI
语种英语
WOS记录号WOS:000290676100021
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7899
专题太阳物理研究部
作者单位1.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
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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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