Observations of EUV and soft X-ray recurring jets in an active region
文献类型：期刊论文
| 作者 | 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
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2011-10 |
| 卷号 | 11期号:10页码:1229-1242 |
| ISSN号 | 1674-4527 |
| 关键词 | Sun: activity Sun: corona Sun: UV radiation Sun: magnetic fields |
| 通讯作者 | Yang, LH (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | 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. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | H-ALPHA SURGES ; EMERGING FLUX REGION ; MAGNETIC RECONNECTION ; NUMERICAL-SIMULATION ; EXTREME-ULTRAVIOLET ; TRANSITION REGION ; SOLAR ; HINODE ; TELESCOPE ; SUN |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/1674-4527/11/10/010/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000296127800010 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6171]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 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 |
| 推荐引用方式 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,&Hong JC.(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. |
入库方式： OAI收割
来源：云南天文台
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