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The Electron Acoustic Wave and Its Role in Solar Flaring Loops Heating
Chen,L.1,2; Wu,D. J.1; Xiang,L.3,4; Shi,C.1; Ma,B.5,6; Tang,J. F.7; Huang,J.2
2020-12-01
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume904Issue:2
AbstractAbstract From soft X-ray emission, the solar flare temperatures are from several MK to dozens of times MK, which are higher than the preflare coronal temperatures. A combination of several heating mechanisms may contribute to the heating problem in solar flare loops. In this paper, we propose an important mechanism of solar flaring loops heating, in which the excited electron acoustic wave (EAW) by flare-accelerated fast electron beams can lead to electron heating via collisionless Landau damping effect produced by wave–particle resonant interaction. Taking account of the return-current effect of fast electron beams, by use of numerical and analytic solutions, the plasma wave instability driven by fast electron beams is investigated in typical solar flare loop plasma parameters. The results show that the EAW is the strongest unstable wave mode rather than other wave modes. The dissipation of EAW via collisionless Landau damping and its application to solar flaring loops heating are discussed in detail.
KeywordSolar flares Plasma astrophysics Solar coronal waves
DOI10.3847/1538-4357/abc00b
Language英语
WOS IDIOP:0004-637X-904-2-abc00b
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/61136
Collection中国科学院国家天文台
Corresponding AuthorChen,L.
Affiliation1.Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, People’s Republic of China clvslc214@pmo.ac.cn, djwu@pmo.ac.cn, shichen0923@163.com
2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012, People’s Republic of China; huangj@bao.ac.cn
3.Key Laboratory of Low Dimensional Quantum Structures and Quantum Control, Hunan Normal University, Changsha 410081, People’s Republic of China
4.School of Physics and Electronics, Hunan Normal University, Changsha 410081, People’s Republic of China; xiangliang@pmo.ac.cn
5.Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China
6.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People’s Republic of China; bingma@pmo.ac.cn
7.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, People’s Republic of China; jftang@xao.ac.cn
Recommended Citation
GB/T 7714
Chen,L.,Wu,D. J.,Xiang,L.,et al. The Electron Acoustic Wave and Its Role in Solar Flaring Loops Heating[J]. The Astrophysical Journal,2020,904(2).
APA Chen,L..,Wu,D. J..,Xiang,L..,Shi,C..,Ma,B..,...&Huang,J..(2020).The Electron Acoustic Wave and Its Role in Solar Flaring Loops Heating.The Astrophysical Journal,904(2).
MLA Chen,L.,et al."The Electron Acoustic Wave and Its Role in Solar Flaring Loops Heating".The Astrophysical Journal 904.2(2020).
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