YNAO OpenIR  > 选址与日冕观测组
EXTREME-ULTRAVIOLET MULTI-WAVELENGTH OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR POST-FLARE CUSP-SHAPE LOOP WITH SDO/AIA
Su, JT1; Shen YD(申远灯)2; Liu Y(刘煜)2; Su, JT (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2012-07-20
卷号754期号:1
DOI10.1088/0004-637X/754/1/43
产权排序第2完成单位
收录类别SCI
关键词Sun: Activity Sun: Corona Sun: Flares Sun: Oscillations
摘要We present extreme-ultraviolet multi-wavelength observations with the SDO/AIA instruments of quasi-periodic pulsations (QPPs) propagating along a cusp-shaped loop formed after an M2.2 flare on the Sun. Our motivation is to detect whether there were slow-mode magnetoacoustic waves propagating along its protruding flux tube. To this end, with fast Fourier transform we extract the short (<3 minutes) and long (>3 minutes) period components of the QPPs from time-space diagrams of the tube slices. We find that velocity differences did exist among the short/long-period components of different wavelengths, but only one event in the long-period ones showed they were greater than the measurement errors (e.g., 65 km s(-1)), which were 330 km s(-1) detected in 171 angstrom, 590 km s(-1) in 211 angstrom, and 180 km s(-1) in 304 angstrom. The intensity modulation in all wavelengths is found to be very large, e. g., similar to 60% of the emission trend for an event in the 171 angstrom passband, which would be an order of magnitude higher than the perturbation of the plasma density in the slow-mode magnetoacoustic waves. Moreover, only the QPPs with upward velocities of 50-300 km s(-1) are found in the tube, and the downward ones of several tens of kilometers are never unambiguously detected. Therefore, most of the QPP events under study were likely the episodic outflows along the tube, and the one with a supersonic speed of 590 km s(-1) may be a kink wave.
项目资助者AJFC [10878016, 11073050] ; National Astronomical Observatories, the Chinese Academy of Sciences (CAS) ; Key Laboratory of Solar Activity of CAS ; National Basic Research Program of China [2011CB8114001]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000306111800043
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SLOW MAGNETOACOUSTIC WAVES ; CORONAL LOOPS ; PROPAGATING WAVES ; OSCILLATIONS ; PLUMES ; SIGNATURE ; OUTFLOWS ; UPFLOWS ; MODES ; HOLES
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7182
专题选址与日冕观测组
通讯作者Su, JT (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China.
作者单位1.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China
2.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
推荐引用方式
GB/T 7714
Su, JT,Shen YD,Liu Y,et al. EXTREME-ULTRAVIOLET MULTI-WAVELENGTH OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR POST-FLARE CUSP-SHAPE LOOP WITH SDO/AIA[J]. ASTROPHYSICAL JOURNAL,2012,754(1).
APA Su, JT,Shen YD,Liu Y,&Su, JT .(2012).EXTREME-ULTRAVIOLET MULTI-WAVELENGTH OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR POST-FLARE CUSP-SHAPE LOOP WITH SDO/AIA.ASTROPHYSICAL JOURNAL,754(1).
MLA Su, JT,et al."EXTREME-ULTRAVIOLET MULTI-WAVELENGTH OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR POST-FLARE CUSP-SHAPE LOOP WITH SDO/AIA".ASTROPHYSICAL JOURNAL 754.1(2012).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
EXTREME-ULTRAVIOLET (2436KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Su, JT]的文章
[Shen YD(申远灯)]的文章
[Liu Y(刘煜)]的文章
百度学术
百度学术中相似的文章
[Su, JT]的文章
[Shen YD(申远灯)]的文章
[Liu Y(刘煜)]的文章
必应学术
必应学术中相似的文章
[Su, JT]的文章
[Shen YD(申远灯)]的文章
[Liu Y(刘煜)]的文章
相关权益政策
暂无数据
收藏/分享
文件名: EXTREME-ULTRAVIOLET MULTI-WAVELENGTH OBSERVATIONS OF QUASI-PERIODIC PULSATIONS IN A SOLAR POST-FLARE CUSP-SHAPE LOOP WITH SDO_AIA.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。