| Weak infrared molecular lines reveal rapid outflow in cool magnetic sunspot penumbral fibrils | |
Penn, MJ1,2; Cao WD(曹文达)3,4 ; Walton, SR2; Chapman, GA2; Livingston, W1; Penn, MJ (reprint author), San Fernando Observ, Dept Phys & Astron, 18111 Nordhoff St, Northridge, CA 91330 USA.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2003-06-20 | |
| 卷号 | 590期号:2页码:L119-L122 |
| DOI | 10.1086/376749 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 关键词 | Sun : Atmospheric Motions Sun : Infrared Sunspots Techniques : Spectroscopic |
| 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. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:000183459600014 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | EVERSHED FLOW ; SPATIAL STRUCTURE ; SIPHON FLOWS ; FLUX TUBES ; FEATURES ; PROBES ; ASYMMETRIES ; INTENSITY ; VELOCITY ; GEOMETRY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4160 |
| 专题 | 其他 |
| 通讯作者 | Penn, MJ (reprint author), San Fernando Observ, Dept Phys & Astron, 18111 Nordhoff St, Northridge, CA 91330 USA. |
| 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,&Penn, MJ .(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. |
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| Weak Infrared Molecu（201KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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