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DOI | 10.1002/2017GL073377 |
Juno-UVS approach observations of Jupiter's auroras | |
Gladstone, G. R.1,2; Versteeg, M. H.1; Greathouse, T. K.1; Hue, V.1; Davis, M. W.1; Gerard, J. -C.3; Grodent, D. C.3; Bonfond, B.3; Nichols, J. D.4; Wilson, R. J.5; Hospodarsky, G. B.6; Bolton, S. J.1; Levin, S. M.7; Connerney, J. E. P.8; Adriani, A.9; Kurth, W. S.6; Mauk, B. H.10; Valek, P.1; McComas, D. J.11,12; Orton, G. S.7; Bagenal, F.5 | |
2017-08-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:15 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Belgium; England; Italy |
英文摘要 | Juno ultraviolet spectrograph (UVS) observations of Jupiter's aurora obtained during approach are presented. Prior to the bow shock crossing on 24 June 2016, the Juno approach provided a rare opportunity to correlate local solar wind conditions with Jovian auroral emissions. Some of Jupiter's auroral emissions are expected to be controlled or modified by local solar wind conditions. Here we compare synoptic Juno-UVS observations of Jupiter's auroral emissions, acquired during 3-29 June 2016, with in situ solar wind observations, and related Jupiter observations from Earth. Four large auroral brightening events are evident in the synoptic data, in which the total emitted auroral power increases by a factor of 3-4 for a few hours. Only one of these brightening events correlates well with large transient increases in solar wind ram pressure. The brightening events which are not associated with the solar wind generally have a risetime of similar to 2 h and a decay time of similar to 5 h. Plain Language Summary Juno ultraviolet spectrograph (UVS) observations of Jupiter's aurora obtained during approach are presented. Jupiter's auroras are thought to be controlled in part by the solar wind, a stream of charged particles flowing outward from the Sun. The Juno approach was a rare opportunity to compare solar wind conditions near Jupiter with the Jovian ultraviolet aurora, using observations made during June 2016. Although Jupiter's aurora is always present, four brightening events were seen in the data, in which the total auroral power increased to several times the typical level for a few hours. Only one of these brightening events appears well connected with solar wind activity. The brightening events which are not associated with the solar wind all increase in brightness in about 2 h and then dim back down again in about another 5 h. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408379000013 |
WOS关键词 | JOVIAN AURORA ; SOLAR-WIND ; MAGNETOSPHERE ; VARIABILITY ; EMISSIONS ; ENERGY |
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/29003 |
专题 | 气候变化 |
作者单位 | 1.Southwest Res Inst, San Antonio, TX 78238 USA; 2.Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA; 3.Univ Liege, STAR Inst, LPAP, Liege, Belgium; 4.Univ Leicester, Dept Phys & Astron, Leicester, Leics, England; 5.Univ Colorado Boulder, Lab Atmospher & Space Phys, Boulder, CO USA; 6.Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA; 7.Jet Prop Lab, Pasadena, CA USA; 8.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 9.Ist Astrofis & Planetol Spaziali, Rome, Italy; 10.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA; 11.Princeton Univ, Off VP PPPL, Princeton, NJ 08544 USA; 12.Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA |
推荐引用方式 GB/T 7714 | Gladstone, G. R.,Versteeg, M. H.,Greathouse, T. K.,et al. Juno-UVS approach observations of Jupiter's auroras[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(15). |
APA | Gladstone, G. R..,Versteeg, M. H..,Greathouse, T. K..,Hue, V..,Davis, M. W..,...&Bagenal, F..(2017).Juno-UVS approach observations of Jupiter's auroras.GEOPHYSICAL RESEARCH LETTERS,44(15). |
MLA | Gladstone, G. R.,et al."Juno-UVS approach observations of Jupiter's auroras".GEOPHYSICAL RESEARCH LETTERS 44.15(2017). |
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