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OSCILLATION OF NEWLY FORMED LOOPS AFTER MAGNETIC RECONNECTION IN THE SOLAR CHROMOSPHERE
Yang, Shuhong1,2; Xiang YY(向永源)3; Yang, SH (reprint author)
发表期刊ASTROPHYSICAL JOURNAL LETTERS
2016-03-10
卷号819期号:2
DOI10.3847/2041-8205/819/2/L24
产权排序第3完成单位
收录类别SCI
关键词Magnetic Reconnection Sun: Chromosphere Sun: Evolution Sun: Oscillations
摘要With the high spatial and temporal resolution Ha images from the New Vacuum Solar Telescope, we focus on two groups of loops with an X-shaped configuration in the dynamic chromosphere. We find that the anti-directed loops approach each other and reconnect continually. The connectivity of the loops is changed and new loops are formed and stack together. The stacked loops are sharply bent, implying that they are greatly impacted by the magnetic tension force. When another reconnection process takes place, one new loop is formed and stacks with the previously formed ones. Meanwhile, the stacked loops retract suddenly and move toward the balance position, performing an overshoot movement, which led to an oscillation with an average period of about 45 s. The oscillation of newly formed loops after magnetic reconnection in the chromosphere is observed for the first time. We suggest that the stability of the stacked loops is destroyed due to the attachment of the last new loop and then suddenly retract under the effect of magnetic tension. Because of the retraction, another lower loop is pushed outward and performs an oscillation with a period of about 25 s. The different oscillation periods may be due to their difference in three parameters, i.e., loop length, plasma density, and magnetic field strength.
项目资助者National Natural Science Foundations of China(11533008, 11203037, 11221063, 11373004, 11303049) ; Strategic Priority Research Program-The Emergence of Cosmological Structures of the Chinese Academy of Sciences(XDB09000000) ; CAS Project(KJCX2-EW-T07) ; Young Researcher Grant of National Astronomical Observatories of CAS ; Youth Innovation Promotion Association of CAS(2014043)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN2041-8205
URL查看原文
WOS记录号WOS:000371788300008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]FLARE ; FIELD ; JETS ; FLUX ; SUN
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9354
专题抚仙湖太阳观测站
通讯作者Yang, SH (reprint author)
作者单位1.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2.College of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
3.Fuxian Solar Observatory, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
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Yang, Shuhong,Xiang YY,Yang, SH . OSCILLATION OF NEWLY FORMED LOOPS AFTER MAGNETIC RECONNECTION IN THE SOLAR CHROMOSPHERE[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,819(2).
APA Yang, Shuhong,Xiang YY,&Yang, SH .(2016).OSCILLATION OF NEWLY FORMED LOOPS AFTER MAGNETIC RECONNECTION IN THE SOLAR CHROMOSPHERE.ASTROPHYSICAL JOURNAL LETTERS,819(2).
MLA Yang, Shuhong,et al."OSCILLATION OF NEWLY FORMED LOOPS AFTER MAGNETIC RECONNECTION IN THE SOLAR CHROMOSPHERE".ASTROPHYSICAL JOURNAL LETTERS 819.2(2016).
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