DIFFRACTION, REFRACTION, AND REFLECTION OF AN EXTREME-ULTRAVIOLET WAVE OBSERVED DURING ITS INTERACTIONS WITH REMOTE ACTIVE REGIONS
文献类型：期刊论文
| 作者 | Shen, Yuandeng1,2,3,4,5; Liu, Yu1,4,5; Su, Jiangtao4 ; Li, Hui5; Zhao, Ruijuan1; Tian, Zhanjun1; Ichimoto, Kiyoshi2,3; Shibata, Kazunari2,3
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2013-08-20 |
| 卷号 | 773期号:2 |
| 关键词 | Sun: corona Sun: coronal mass ejections (CMEs) Sun: flares Sun: oscillations |
| 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000322899600016 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5999]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 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). |
入库方式： OAI收割
来源：国家天文台
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