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Chromospheric Cannonballs on the Sun
Yang, Shuhong1,2; Zhang, Jun1,2; Li, Xiaohong1,2; Liu Z(刘忠)3; Xiang YY(向永源)3
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2019-08-01
卷号880期号:2页码:7
DOI10.3847/2041-8213/ab2fe2
产权排序第3完成单位
收录类别SCI
关键词magnetic reconnection Sun: activity Sun: chromosphere Sun: magnetic fields
摘要

In the highly dynamic chromosphere, there exist many kinds of small-scale activities, such as spicules, surges, and Ellerman bombs. Here, we report the discovery of a new phenomenon in the chromosphere observed with the New Vacuum Solar Telescope at the Fuxian Solar Observatory. In the high tempo-spatial-resolution Ha images, some dark or bright structures are found to fly along the curved trajectory, looking like cannonballs. Their average size, mass, and velocity are about 1.5 x 10(9) km(3), 1.5 x 10(8) kg, and 56 km s(-1), respectively. In the simultaneous (extreme-) ultraviolet images obtained by the Solar Dynamics Observatory, these cannonballs appear as brighter features compared to the surrounding area, implying that there exists some kind of heating during this process. The photospheric magnetograms show the magnetic flux emergence and interaction with the pre-existing fields. These observations reveal that the cannonballs are chromospheric material blobs launched due to the magnetic reconnection between emerging magnetic flux and the pre-existing loops.

资助项目National Natural Science Foundations of China[11673035] ; National Natural Science Foundations of China[11790304] ; National Natural Science Foundations of China[11533008] ; National Natural Science Foundations of China[11790300] ; Key Programs of the Chinese Academy of Sciences[QYZDJ-SSW-SLH050] ; Youth Innovation Promotion Association of CAS[2014043]
项目资助者National Natural Science Foundations of China[11673035, 11790304, 11533008, 11790300] ; Key Programs of the Chinese Academy of Sciences[QYZDJ-SSW-SLH050] ; Youth Innovation Promotion Association of CAS[2014043]
语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN2041-8205
URL查看原文
WOS记录号WOS:000478807400007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]H-ALPHA SURGES ; X-RAY JETS ; MAGNETIC RECONNECTION ; SOLAR ; SPICULES
引用统计
被引频次:3[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/114a53/20540
专题抚仙湖太阳观测和研究基地
通讯作者Yang, Shuhong
作者单位1.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
3.Fuxian Solar Observatory, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
推荐引用方式
GB/T 7714
Yang, Shuhong,Zhang, Jun,Li, Xiaohong,et al. Chromospheric Cannonballs on the Sun[J]. ASTROPHYSICAL JOURNAL LETTERS,2019,880(2):7.
APA Yang, Shuhong,Zhang, Jun,Li, Xiaohong,Liu Z,&Xiang YY.(2019).Chromospheric Cannonballs on the Sun.ASTROPHYSICAL JOURNAL LETTERS,880(2),7.
MLA Yang, Shuhong,et al."Chromospheric Cannonballs on the Sun".ASTROPHYSICAL JOURNAL LETTERS 880.2(2019):7.
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