Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL072286 |
Juno observations of energetic charged particles over Jupiter's polar regions: Analysis of monodirectional and bidirectional electron beams | |
Mauk, B. H.1; Haggerty, D. K.1; Paranicas, C.1; Clark, G.1; Kollmann, P.1; Rymer, A. M.1; Mitchell, D. G.1; Bolton, S. J.2; Levin, S. M.3; Adriani, A.4; Allegrini, F.2,5; Bagenal, F.6; Connerney, J. E. P.7; Gladstone, G. R.2; Kurth, W. S.8; McComas, D. J.2,9; Ranquist, D.6; Szalay, J. R.2; Valek, P.2 | |
2017-05-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Italy |
英文摘要 | Juno obtained unique low-altitude space environment measurements over Jupiter's poles on 27 August 2016. Here Jupiter Energetic-particle Detector Instrument observations are presented for electrons (25-800 keV) and protons (10-1500 keV). We analyze magnetic field-aligned electron angular beams over expected auroral regions that were sometimes symmetric (bidirectional) but more often strongly asymmetric. Included are variable but surprisingly persistent upward, monodirectional electron angular beams emerging from what we term the "polar cap," poleward of the nominal auroral ovals. The energy spectra of all beams were monotonic and hard (not structured in energy), showing power law-like distributions often extending beyond similar to 800 keV. Given highly variable downward energy fluxes (below 1 R-J altitudes within the loss cone) as high as 280mW/m(2), we suggest that mechanisms generating these beams are among the primary processes generating Jupiter's uniquely intense auroral emissions, distinct from what is typically observed at Earth. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404131900004 |
WOS关键词 | AURORAL OVAL |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25629 |
专题 | 气候变化 |
作者单位 | 1.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA; 2.Southwest Res Inst, San Antonio, TX USA; 3.Jet Prop Lab, Pasadena, CA USA; 4.Ist Nazl Astrofis, Ist Astrofis & Planetol Spaziali, Rome, Italy; 5.Univ Texas San Antonio, Phys & Astron Dept, San Antonio, TX USA; 6.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 7.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 8.Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA; 9.Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA |
推荐引用方式 GB/T 7714 | Mauk, B. H.,Haggerty, D. K.,Paranicas, C.,et al. Juno observations of energetic charged particles over Jupiter's polar regions: Analysis of monodirectional and bidirectional electron beams[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(10). |
APA | Mauk, B. H..,Haggerty, D. K..,Paranicas, C..,Clark, G..,Kollmann, P..,...&Valek, P..(2017).Juno observations of energetic charged particles over Jupiter's polar regions: Analysis of monodirectional and bidirectional electron beams.GEOPHYSICAL RESEARCH LETTERS,44(10). |
MLA | Mauk, B. H.,et al."Juno observations of energetic charged particles over Jupiter's polar regions: Analysis of monodirectional and bidirectional electron beams".GEOPHYSICAL RESEARCH LETTERS 44.10(2017). |
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