| MAGNETIC FIELDS OF AN ACTIVE REGION FILAMENT FROM FULL STOKES ANALYSIS OF Si I 1082.7 nm AND He I 1083.0 nm | |
Xu Z(徐稚)1 ; Lagg, A2; Solanki, S2,3; Liu Y(刘煜)1; Xu, Z (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2012-04 | |
| 卷号 | 749期号:2页码:138-149 |
| DOI | 10.1088/0004-637X/749/2/138 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Sun: Infrared Sun: Filaments Sun: Magnetic Topology Prominences |
| 摘要 | Vector magnetic fields of an active region filament in the photosphere and upper chromosphere are obtained from spectro-polarimetric observations recorded with the Tenerife Infrared Polarimeter (TIP II) at the German Vacuum Tower Telescope. We apply Milne-Eddington inversions on full Stokes vectors of the photospheric Si I 1082.7 nm and the upper chromospheric He I triplet at 1083.0 nm to obtain the magnetic field vector and velocity maps in two atmosphere layers. We find that (1) a complete filament was already present in H alpha at the beginning of the TIP II data acquisition. Only a partially formed one, composed of multiple small threads, was present in He I. (2) The AR filament comprises two sections. One shows strong magnetic field intensities, about 600-800 G in the upper chromosphere and 800-1000 G in the photosphere. The other exhibits only comparatively weak magnetic field strengths in both layers. (3) The Stokes V signal is indicative of a dip in the magnetic field strength close to the chromospheric PIL. (4) In the chromosphere, consistent upflows are found along the PIL flanked by downflows. (5) The transversal magnetic field is nearly parallel to the PIL in the photosphere and inclined by 20 degrees-30 degrees in the chromosphere. (6) The chromospheric magnetic field around the filament is found to be in normal configuration, while the photospheric field presents a concave magnetic topology. The observations are consistent with the emergence of a flux rope with a subsequent formation of a filament. |
| 项目资助者 | National Natural Science Foundation of China [10933003, 11103075] ; WCU [R31-10016] ; Korean Ministry of Education, Science and Technology |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| 归档日期 | 2012-11-29 |
| WOS记录号 | WOS:000302785700042 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | SOLAR PROMINENCES ; QUIESCENT PROMINENCES ; ANGSTROM MULTIPLET ; POLAR CROWN ; FLUX ROPE ; VECTOR ; LINE ; PROFILES ; POLARIZATION ; MODEL |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4686 |
| 专题 | 抚仙湖太阳观测和研究基地 |
| 通讯作者 | Xu, Z (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China. |
| 作者单位 | 1.Yunnan Astronomical Observatory/National Astronomical Observatories, Chinese Academy of Science, Kunming 650011, China 2.Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Strasse 2, 37191 Katlenburg-Lindau, Germany 3.School of Space Research, Kyung Hee University, Yongin, Gyeonggi 446-701, Republic of Korea |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Xu Z,Lagg, A,Solanki, S,et al. MAGNETIC FIELDS OF AN ACTIVE REGION FILAMENT FROM FULL STOKES ANALYSIS OF Si I 1082.7 nm AND He I 1083.0 nm[J]. ASTROPHYSICAL JOURNAL,2012,749(2):138-149. |
| APA | Xu Z,Lagg, A,Solanki, S,Liu Y,&Xu, Z .(2012).MAGNETIC FIELDS OF AN ACTIVE REGION FILAMENT FROM FULL STOKES ANALYSIS OF Si I 1082.7 nm AND He I 1083.0 nm.ASTROPHYSICAL JOURNAL,749(2),138-149. |
| MLA | Xu Z,et al."MAGNETIC FIELDS OF AN ACTIVE REGION FILAMENT FROM FULL STOKES ANALYSIS OF Si I 1082.7 nm AND He I 1083.0 nm".ASTROPHYSICAL JOURNAL 749.2(2012):138-149. |
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