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Observations of EUV and soft X-ray recurring jets in an active region
Yang LH(杨丽恒)1,2; Jiang YC(姜云春)1; Yang JY(杨家艳)1; Bi Y(毕以)1; Zheng RS(郑瑞生)1; Hong JC(洪俊超)1; Yang, LH (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2011-10
卷号11期号:10页码:1229-1242
DOI10.1088/1674-4527/11/10/010
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Corona Sun: Uv Radiation Sun: Magnetic Fields
摘要We present simultaneous observations of three recurring jets in EUV and soft X-ray (SXR), which occurred in an active region on 2007 June 5. By comparing their morphological and kinematic characteristics in these two different wavelengths, we found that EUV and SXR jets had similar locations, directions, sizes and velocities. We also analyzed their spectral properties by using six spectral lines from the EUV Imaging Spectrometer (EIS) onboard Hinode and found that these jets had temperatures from 0.05 to 2.0 MK and maximum electron densities from 6.6 x 10(9) to 3.4 x 10(10) cm(-3). For each jet, an elongated blue-shifted component and a red-shifted component at the jet base were simultaneously observed in the Fe XII lambda 195 and the He II lambda 256 lines. The three jets had maximum Doppler velocities from 25 to 121 km s(-1) in the Fe XII lambda 195 line and from 115 to 232 km s(-1) in the He II lambda 256 line. They had maximum non-thermal velocities from 98 to 181 km s(-1) in the Fe XII lambda 195 line and from 196 to 399 km s(-1) in the He II lambda 256 line. We also examined the relationship between averaged Doppler velocities and maximum ionization temperatures of these three jets and found that averaged Doppler velocities decreased with the increase of maximum ionization temperatures. In the photosphere, magnetic flux emergences and cancelations continuously took place at the jet base. These observational results were consistent with the magnetic reconnection jet model, implying that magnetic reconnection between emerging magnetic flux and ambient magnetic field occurred in the lower atmosphere.
项目资助者National Basic Research Program of China (973 Program) [2011CB811403] ; National Natural Science Foundation of China [10973038, 40636031] ; Scientific Application Foundation of Yunnan Province [2007A112M, 2007A115M]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1674-4527
URL查看原文
归档日期2011-09-16
WOS记录号WOS:000296127800010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]H-ALPHA SURGES ; EMERGING FLUX REGION ; MAGNETIC RECONNECTION ; NUMERICAL-SIMULATION ; EXTREME-ULTRAVIOLET ; TRANSITION REGION ; SOLAR ; HINODE ; TELESCOPE ; SUN
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6171
专题太阳物理研究组
通讯作者Yang, LH (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China
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Yang LH,Jiang YC,Yang JY,et al. Observations of EUV and soft X-ray recurring jets in an active region[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2011,11(10):1229-1242.
APA Yang LH.,Jiang YC.,Yang JY.,Bi Y.,Zheng RS.,...&Yang, LH .(2011).Observations of EUV and soft X-ray recurring jets in an active region.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,11(10),1229-1242.
MLA Yang LH,et al."Observations of EUV and soft X-ray recurring jets in an active region".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 11.10(2011):1229-1242.
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