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The Effects of Upper-Hybrid Waves on Energy Dissipation in the Electron Diffusion Region
Alternative TitleWOS:000584669000006;20204209354251
Dokgo, Kyunghwan; Hwang, Kyoung-Joo; Burch, James L.; Yoon, Peter H.; Graham, Daniel B.; Li, Wenya2,3
Source PublicationGEOPHYSICAL RESEARCH LETTERS
2020
Volume47Issue:19Pages:e2020GL089778
DOI10.1029/2020GL089778
ISSN0094-8276
Language英语
KeywordMagnetic Reconnection Electron Diffusion Region Upper-Hybrid Waves Energy Dissipation MAGNETIC NULLS RECONNECTION
AbstractUsing a two-dimensional particle-in-cell simulation, we investigate the effects and roles of upper-hybrid waves (UHW) near the electron diffusion region (EDR). The energy dissipation via the wave-particle interaction in our simulation agrees withJ center dot E(')measured by magnetospheric multiscale (MMS) spacecraft. It means that UHW contributes to the local energy dissipation. As a result of wave-particle interactions, plasma parameters which determine the larger-scale energy dissipation in the EDR are changed. They-directional current decreases while the pressure tensorP(yz)increases/decreases when the agyrotropic beam density is low/high, where(x, y, z)-coordinates correspond the(L, M, N)-boundary coordinates. Because the reconnection electric field comes from- partial differential P-yz/ partial differential z, our result implies that UHW plays an additional role in affecting larger-scale energy dissipation in the EDR by changing plasma parameters. We provide a simple diagram that shows how the UHW activities change the profiles of plasma parameters near the EDR comparing cases with and without UHW.
Indexed BySCI ; EI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7729
Collection中国科学院国家空间科学中心
Affiliation1.[Dokgo, Kyunghwan; Hwang, Kyoung-Joo; Burch, James L.] Southwest Res Inst, San Antonio, TX 78238 USA
2.Yoon, Peter H.] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA
3.Swedish Inst Space Phys, Uppsala, Sweden
4.Chinese Acad Sci, State Key Lab Space Weather, Natl Space Sci Ctr, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Dokgo, Kyunghwan,Hwang, Kyoung-Joo,Burch, James L.,et al. The Effects of Upper-Hybrid Waves on Energy Dissipation in the Electron Diffusion Region[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(19):e2020GL089778.
APA Dokgo, Kyunghwan,Hwang, Kyoung-Joo,Burch, James L.,Yoon, Peter H.,Graham, Daniel B.,&Li, Wenya.(2020).The Effects of Upper-Hybrid Waves on Energy Dissipation in the Electron Diffusion Region.GEOPHYSICAL RESEARCH LETTERS,47(19),e2020GL089778.
MLA Dokgo, Kyunghwan,et al."The Effects of Upper-Hybrid Waves on Energy Dissipation in the Electron Diffusion Region".GEOPHYSICAL RESEARCH LETTERS 47.19(2020):e2020GL089778.
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