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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.
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2011-10
Volume11Issue:10Pages:1229-1242
DOI10.1088/1674-4527/11/10/010
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Activity Sun: Corona Sun: Uv Radiation Sun: Magnetic Fields
AbstractWe 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.
Funding OrganizationNational Basic Research Program of China (973 Program) [2011CB811403] ; National Natural Science Foundation of China [10973038, 40636031] ; Scientific Application Foundation of Yunnan Province [2007A112M, 2007A115M]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN1674-4527
URL查看原文
Archive Date2011-09-16
WOS IDWOS:000296127800010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordH-ALPHA SURGES ; EMERGING FLUX REGION ; MAGNETIC RECONNECTION ; NUMERICAL-SIMULATION ; EXTREME-ULTRAVIOLET ; TRANSITION REGION ; SOLAR ; HINODE ; TELESCOPE ; SUN
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Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6171
Collection太阳物理研究组
Corresponding AuthorYang, LH (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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