Weak infrared molecular lines reveal rapid outflow in cool magnetic sunspot penumbral fibrils
文献类型：期刊论文
| 作者 | Penn, MJ1,2; Cao WD(曹文达)3,4 ; Walton, SR2; Chapman, GA2; Livingston, W1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2003-06-20 |
| 卷号 | 590期号:2页码:L119-L122 |
| 关键词 | Sun : atmospheric motions Sun : infrared sunspots techniques : spectroscopic |
| ISSN号 | 0004-637X |
| 产权排序 | 第三完成单位 |
| 通讯作者 | Penn, MJ (reprint author), San Fernando Observ, Dept Phys & Astron, 18111 Nordhoff St, Northridge, CA 91330 USA. |
| 英文摘要 | New imaging spectropolarimetric observations of the Evershed flow in sunspot penumbrae using weak infrared molecular absorption lines are presented. A plane-polar coordinate system in the sunspot frame is defined, allowing averaging of many raw spectra. Molecular lines show Doppler shifts implying typical horizontal outflow speeds of 6 and up to 9 km s(-1). The Ti I polarimetric spectra show the same rapid outflow and suggest an average penumbral magnetic field strength of 1400 G. While these observations show Doppler shifts of the entire line profile, the velocities are in better agreement with previous measurements from spectral line asymmetries. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EVERSHED FLOW ; SPATIAL STRUCTURE ; SIPHON FLOWS ; FLUX TUBES ; FEATURES ; PROBES ; ASYMMETRIES ; INTENSITY ; VELOCITY ; GEOMETRY |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1538-4357/590/2/L119/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000183459600014 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4160]  |
| 专题 | 云南天文台_其他 |
| 作者单位 | 1.National Solar Observatory (operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation), 950 North Cherry Avenue, Tucson, AZ 85719 2.Department of Physics and Astronomy, San Fernando Observatory and California State University Northridge, 18111 Nordhoff Street, Northridge, CA 91330-8268 3.Yunnan Observatory, National Astronomical Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, Yunnan, China 4.Center for Solar Research, New Jersey Institute of Technology, 323 Martin Luther King Boulevard, Newark, NJ 07102 |
| 推荐引用方式 GB/T 7714 | Penn, MJ,Cao WD,Walton, SR,et al. Weak infrared molecular lines reveal rapid outflow in cool magnetic sunspot penumbral fibrils[J]. ASTROPHYSICAL JOURNAL,2003,590(2):L119-L122. |
| APA | Penn, MJ,Cao WD,Walton, SR,Chapman, GA,&Livingston, W.(2003).Weak infrared molecular lines reveal rapid outflow in cool magnetic sunspot penumbral fibrils.ASTROPHYSICAL JOURNAL,590(2),L119-L122. |
| MLA | Penn, MJ,et al."Weak infrared molecular lines reveal rapid outflow in cool magnetic sunspot penumbral fibrils".ASTROPHYSICAL JOURNAL 590.2(2003):L119-L122. |
入库方式： OAI收割
来源：云南天文台
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