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DOI | 10.1002/2017GL074366 |
Energetic particle signatures of magnetic field-aligned potentials over Jupiter's polar regions | |
Clark, G.1; Mauk, B. H.1; Haggerty, D.1; Paranicas, C.1; Kollmann, P.1; Rymer, A.1; Bunce, E. J.2,3; Cowley, S. W. H.2,3; Mitchell, D. G.1; Provan, G.2,3; Ebert, R. W.4; Allegrini, F.4,5,6; Bagenal, F.7; Bolton, S.4; Connerney, J.8; Kotsiaros, S.8; Kurth, W. S.9,10; Levin, S.11; McComas, D. J.4,12; Saur, J.13; Valek, P.4,5,6 | |
2017-09-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England; Germany |
英文摘要 | Recent results of the first ever orbit through Jupiter's auroral region by NASA's Juno spacecraft did not show evidence of coherent acceleration in the auroral or polar region. However, in this letter, we show energetic particle data from Juno's Jupiter Energetic-particle Detector Instrument instrument during the third auroral pass that exhibits conclusive evidence of downward parallel electric fields in portions of Jupiter's polar region. The energetic particle distributions show inverted-V ion and electron structures in a downward electric current region with accelerated peaked distributions in hundreds of keV to similar to 1MeV range. The origin of these large electric potential structures is investigated and discussed within the current theoretical framework of current-voltage relationships at both Earth and Jupiter. Parallel electric fields responsible for accelerating particles to maintain the aurora/magnetospheric circuit appear to be a common phenomenon among strongly magnetized planets with conducting ionospheres; however, their origin and generation mechanisms are subjects of ongoing research. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411702400004 |
WOS关键词 | PARALLEL ELECTRIC-FIELDS ; AURORAL CURRENT REGION ; X-RAY-EMISSION ; BIRKELAND CURRENTS ; MAGNETOSPHERE ; IONOSPHERE ; BEAMS ; COROTATION ; FLUX |
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/27189 |
专题 | 气候变化 |
作者单位 | 1.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA; 2.Univ Leicester, Dept Phys, Leicester, Leics, England; 3.Univ Leicester, Dept Astron, Leicester, Leics, England; 4.Southwest Res Inst, San Antonio, TX USA; 5.Univ Texas San Antonio, Dept Phys, San Antonio, TX USA; 6.Univ Texas San Antonio, Dept Astron, San Antonio, TX USA; 7.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 8.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 9.Univ Iowa, Dept Phys, Iowa City, IA USA; 10.Univ Iowa, Dept Astron, Iowa City, IA USA; 11.Jet Prop Lab, Pasadena, CA USA; 12.Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA; 13.Univ Cologne, Inst Geophys & Meteorol, Cologne, Germany |
推荐引用方式 GB/T 7714 | Clark, G.,Mauk, B. H.,Haggerty, D.,et al. Energetic particle signatures of magnetic field-aligned potentials over Jupiter's polar regions[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(17). |
APA | Clark, G..,Mauk, B. H..,Haggerty, D..,Paranicas, C..,Kollmann, P..,...&Valek, P..(2017).Energetic particle signatures of magnetic field-aligned potentials over Jupiter's polar regions.GEOPHYSICAL RESEARCH LETTERS,44(17). |
MLA | Clark, G.,et al."Energetic particle signatures of magnetic field-aligned potentials over Jupiter's polar regions".GEOPHYSICAL RESEARCH LETTERS 44.17(2017). |
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