Running waves observed by Hinode

	Running waves observed by Hinode
	Liang HF(梁红飞)1,2 ; Yang, WG 1; Ma, L 1; Yang, RJ 1
刊名	NEW ASTRONOMY
	2012-02
卷号	17 期号:2 页码:112-116
关键词	Sun: sunspots Sun: oscillations Running waves
ISSN号	1384-1076
通讯作者	Liang, HF (reprint author), Yunnan Normal Univ, Kunming 650092, Peoples R China.
产权排序	第二完成单位
英文摘要	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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SUNSPOT UMBRAL OSCILLATIONS ; PENUMBRAL WAVES ; CHROMOSPHERIC SUNSPOT ; VELOCITY ; REGION
收录类别	SCI
原文出处	http://www.sciencedirect.com/science/article/pii/S1384107611000698
语种	英语
WOS记录号	WOS:000298129800010
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6212]
专题	云南天文台_太阳物理研究组
作者单位	1.Yunnan Normal University, Kunming 650092, China 2.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China
推荐引用方式 GB/T 7714	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.(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.