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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
Source PublicationASTROPHYSICAL JOURNAL
2013-09
Volume774Issue:1Pages:71-77
DOI10.1088/0004-637X/774/1/71
Contribution Rank第1完成单位
Indexed BySCI
KeywordPolarization Sun: Chromosphere Sun: Corona
Abstract

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.

Funding ProjectNational Science Foundation of China (NSFC)[11078005] ; National Science Foundation of China (NSFC)[10943002] ; China's 973 project[G2011CB811400]
Funding OrganizationNational Science Foundation of China (NSFC)[11078005, 10943002] ; China's 973 project[G2011CB811400]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
Archive Date2013-09-24
WOS IDWOS:000323426700071
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEMISSION-LINE POLARIZATION ; WHITE-LIGHT CORONA ; GREEN-LINE ; STATISTICAL EQUILIBRIUM ; MAGNETIC SUBLEVELS ; FE-XIII ; IMPACT ; DEPOLARIZATION ; COLLISIONS ; INTENSITY
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6221
Collection太阳物理研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorQu ZQ(屈中权)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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.,...&Ma L.(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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