The surge-like eruption of a miniature filament

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	The surge-like eruption of a miniature filament
	Yang Jiayan; Jiang Yunchun; Yang Dan; Bi Yi; Yang Bo; Zheng Ruisheng; Hong Junchao
刊名	Research in Astronomy and Astrophysics
	2012
卷号	12 期号:3 页码:300
ISSN号	1674-4527
英文摘要	We report on the rare eruption of a miniature Hα filament that took the form of a surge. The filament first underwent a full development within 46 min and then began to erupt 9 min later, followed by a compact, impulsive X-ray class M2.2 flare with a two-ribbon nature only at the early eruption phase. During the eruption, its top rose, whereas the two legs remained rooted in the chromosphere and showed little swelling perpendicular to the rising direction. This led to a surge-like eruption with a narrow angular extent. Similar to the recent observations for standard and blowout X- ray jets by Moore et al., we thus define it as a "blowout Hα surge." Furthermore, our observations showed that the eruption was associated with (1) a coronal mass ejection guided by a pre-existing streamer, (2) abrupt, significant, and persistent changes in the photospheric magnetic field around the filament, and (3) a sudden disappearance of a small pore. These observations thus provide evidence that a blowout surge is a small- scale version of a large-scale filament eruption in many aspects. Our observations further suggest that at least part of the Hα surges belong to blowout-type cases, and the exact distinction between the standard and blowout Hα surges is important in understanding their different origins and associated eruptive phenomena.
语种	英语
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/45582]
专题	中国科学院国家天文台
作者单位	中国科学院国家天文台
推荐引用方式 GB/T 7714	Yang Jiayan,Jiang Yunchun,Yang Dan,et al. The surge-like eruption of a miniature filament[J]. Research in Astronomy and Astrophysics,2012,12(3):300.
APA	Yang Jiayan.,Jiang Yunchun.,Yang Dan.,Bi Yi.,Yang Bo.,...&Hong Junchao.(2012).The surge-like eruption of a miniature filament.Research in Astronomy and Astrophysics,12(3),300.
MLA	Yang Jiayan,et al."The surge-like eruption of a miniature filament".Research in Astronomy and Astrophysics 12.3(2012):300.