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ON THE COMBINATION OF IMAGING-POLARIMETRY WITH SPECTROPOLARIMETRY OF UPPER SOLAR ATMOSPHERES DURING SOLAR ECLIPSES
Qu ZQ(屈中权)1; Deng LH(邓林华)1,2; Dun GT(敦广涛)1,2; Chang L(常亮)1,2; Zhang XY(张霄宇)1; Cheng XM(程向明)1,2; Allington-Smith, J3; Murray, G3; Qu ZN(屈智宁)1,2; Xue ZK(薛志科)1,2; Ma L(马琳)1,2; Qu, ZQ (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2013-09
卷号774期号:1页码:71-77
DOI10.1088/0004-637X/774/1/71
产权排序第1完成单位
收录类别SCI
关键词Polarization Sun: Chromosphere Sun: Corona
摘要We present results from imaging polarimetry (IP) of upper solar atmospheres during a total solar eclipse on 2012 November 13 and spectropolarimetry of an annular solar eclipse on 2010 January 15. This combination of techniques provides both the synoptic spatial distribution of polarization above the solar limb and spectral information on the physical mechanism producing the polarization. Using these techniques together we demonstrate that even in the transition region, the linear polarization increases with height and can exceed 20%. IP shows a relatively smooth background distribution in terms of the amplitude and direction modified by solar structures above the limb. A map of a new quantity that reflects direction departure from the background polarization supplies an effective technique to improve the contrast of this fine structure. Spectral polarimetry shows that the relative contribution to the integrated polarization over the observed passband from the spectral lines decreases with height while the contribution from the continuum increases as a general trend. We conclude that both imaging and spectral polarimetry obtained simultaneously over matched spatial and spectral domains will be fruitful for future eclipse observations.
项目资助者National Science Foundation of China (NSFC) [11078005, 10943002] ; China's 973 project [G2011CB811400]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2013-09-24
WOS记录号WOS:000323426700071
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EMISSION-LINE POLARIZATION ; WHITE-LIGHT CORONA ; GREEN-LINE ; STATISTICAL EQUILIBRIUM ; MAGNETIC SUBLEVELS ; FE-XIII ; IMPACT ; DEPOLARIZATION ; COLLISIONS ; INTENSITY
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6221
专题太阳物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Qu, ZQ (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China.
作者单位1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
3.Center for Advanced Instrumentation, University of Durham, UK
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Qu ZQ,Deng LH,Dun GT,et al. ON THE COMBINATION OF IMAGING-POLARIMETRY WITH SPECTROPOLARIMETRY OF UPPER SOLAR ATMOSPHERES DURING SOLAR ECLIPSES[J]. ASTROPHYSICAL JOURNAL,2013,774(1):71-77.
APA Qu ZQ.,Deng LH.,Dun GT.,Chang L.,Zhang XY.,...&Qu, ZQ .(2013).ON THE COMBINATION OF IMAGING-POLARIMETRY WITH SPECTROPOLARIMETRY OF UPPER SOLAR ATMOSPHERES DURING SOLAR ECLIPSES.ASTROPHYSICAL JOURNAL,774(1),71-77.
MLA Qu ZQ,et al."ON THE COMBINATION OF IMAGING-POLARIMETRY WITH SPECTROPOLARIMETRY OF UPPER SOLAR ATMOSPHERES DURING SOLAR ECLIPSES".ASTROPHYSICAL JOURNAL 774.1(2013):71-77.
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