DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS

	DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS
	Shen, Yuandeng 1,2,3,4,5; Liu, Yu 1,4,5; Su, Jiangtao 4; Li, Hui5 ; Zhao, Ruijuan 1; Tian, Zhanjun 1; Ichimoto, Kiyoshi 2,3; Shibata, Kazunari 2,3
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2013-08-20
卷号	773 期号:2
关键词	Sun: corona Sun: coronal mass ejections (CMEs) Sun: flares Sun: oscillations
ISSN号	2041-8205
通讯作者	Shen,YD
英文摘要	We present observations of the diffraction, refraction, and reflection of a global extreme-ultraviolet (EUV) wave propagating in the solar corona. These intriguing phenomena are observed when the wave interacts with two remote active regions, and together they exhibit properties of an EUV wave. When the wave approached AR11465, it became weaker and finally disappeared in the active region, but a few minutes later a new wavefront appeared behind the active region, and it was not concentric with the incoming wave. In addition, a reflected wave was also simultaneously observed on the wave incoming side. When the wave approached AR11459, it transmitted through the active region directly and without reflection. The formation of the new wavefront and the transmission could be explained with diffraction and refraction effects, respectively. We propose that the different behaviors observed during the interactions may be caused by different speed gradients at the boundaries of the two active regions. We find that the EUV wave formed ahead of a group of expanding loops a few minutes after the start of the loops' expansion, which represents the initiation of the associated coronal mass ejection (CME). Based on these results, we conclude that the EUV wave should be a nonlinear magnetosonic wave or shock driven by the associated CME, which propagated faster than the ambient fast mode speed and gradually slowed down to an ordinary linear wave. Our observations support the hybrid model that includes both fast wave and slow non-wave components.
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]	CORONAL MASS EJECTION ; GLOBAL EUV WAVE ; SOLAR CORONA ; EIT WAVES ; MORETON WAVES ; SOHO/EIT OBSERVATIONS ; SDO/AIA OBSERVATIONS ; MAGNETOSONIC WAVES ; STEREO ; FLARE
收录类别	SCI
语种	英语
WOS记录号	WOS:000322899600016
公开日期	2014-05-22
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/10106]
专题	紫金山天文台_期刊（老文献）
作者单位	1.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China 2.Kyoto Univ, Kwasan Observ, Kyoto 6078471, Japan 3.Kyoto Univ, Hida Observ, Kyoto 6078471, Japan 4.Chinese Acad Sci, Key Lab Solar Act, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Shen, Yuandeng,Liu, Yu,Su, Jiangtao,et al. DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS[J]. ASTROPHYSICAL JOURNAL LETTERS,2013,773(2).
APA	Shen, Yuandeng.,Liu, Yu.,Su, Jiangtao.,Li, Hui.,Zhao, Ruijuan.,...&Shibata, Kazunari.(2013).DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS.ASTROPHYSICAL JOURNAL LETTERS,773(2).
MLA	Shen, Yuandeng,et al."DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS".ASTROPHYSICAL JOURNAL LETTERS 773.2(2013).