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Running waves observed by Hinode
Liang HF(梁红飞)1,2; Yang, WG1; Ma, L1; Yang, RJ1; Liang, HF (reprint author), Yunnan Normal Univ, Kunming 650092, Peoples R China.
发表期刊NEW ASTRONOMY
2012-02
卷号17期号:2页码:112-116
DOI10.1016/j.newast.2011.06.006
产权排序第2完成单位
收录类别SCI
关键词Sun: Sunspots Sun: Oscillations Running Waves
摘要High cadence (up to 9.6 s) intensity images of a sunspot within the active region NOAA 10953 were obtained by the SOT onboard Hinode with the line H alpha 6563 angstrom on April 30, 2007. The running difference images show that running waves periodically appear within the sunspot umbra and propagate outward forming full circles or partial arcs. The propagation velocity of the running waves decreases progressively when these waves run away from the umbra center. A special relationship between the propagation velocity v and the wavefront radius r of the running waves, v = k/r+r(0), implies that the running waves in Ha line may be fast magnetoacoustic waves. By using FFT, we determined the period of running waves as being approximately 275 s. (C) 2011 Elsevier B.V. All rights reserved.
项目资助者MEXT, Japan ; NAOJ ; National Science Foundation of China (NSFC) [10778726, 10878014, 11063005, 40636031, 40890161] ; Yunnan Science Foundation [2006A0027M, 2009CD171, 2009Z]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
WOS记录号WOS:000298129800010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SUNSPOT UMBRAL OSCILLATIONS ; PENUMBRAL WAVES ; CHROMOSPHERIC SUNSPOT ; VELOCITY ; REGION
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6212
专题太阳物理研究组
通讯作者Liang, HF (reprint author), Yunnan Normal Univ, Kunming 650092, Peoples R China.
作者单位1.Yunnan Normal University, Kunming 650092, China
2.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China
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Liang HF,Yang, WG,Ma, L,et al. Running waves observed by Hinode[J]. NEW ASTRONOMY,2012,17(2):112-116.
APA Liang HF,Yang, WG,Ma, L,Yang, RJ,&Liang, HF .(2012).Running waves observed by Hinode.NEW ASTRONOMY,17(2),112-116.
MLA Liang HF,et al."Running waves observed by Hinode".NEW ASTRONOMY 17.2(2012):112-116.
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