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DOI | 10.1029/2018GL080490 |
Bar Code Events in the Juno-UVS Data: Signature similar to 10MeV Electron Microbursts at Jupiter | |
Bonfond, B.1; Gladstone, G. R.2; Grodent, D.1; Gerard, J. -C.1; Greathouse, T. K.2; Hue, V.2; Kammer, J. A.2; Versteeg, M. H.2; Davis, M. W.2; Becker, H. N.3; Radioti, A.1; Elliott, S. S.4; Imai, M.4; Paranicas, C. P.5; Bolton, S. J.2; Levin, S. M.3; Connerney, J. E. P.6,7 | |
2018-11-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:22页码:12108-12115 |
文章类型 | Article |
语种 | 英语 |
国家 | Belgium; USA |
英文摘要 | One of the most intriguing discoveries of Juno is the quasi-systematic detection of upgoing electrons above the auroral regions. Here we discuss a by-product of the most energetic component of this population: a contamination resembling bar codes in the Juno-UVS images. This pattern is likely caused by bursts of similar to 10MeV electrons penetrating the instrument. These events are mostly detected when Juno's magnetic footprint is located poleward of the main emission relative to the magnetic pole. The signal is not periodic, but the bursts are typically 0.1-1s apart. They are essentially detected when Juno-UVS is oriented toward Jupiter, indicating that the signal is due to upgoing electrons. The event detections occur between 1 and 7 Jovian radii above the 1-bar level, suggesting that the electron acceleration takes place close to Jupiter and is thus both strong and brief. Plain Language Summary Someone's noise is always someone else's signal. Here we use the Juno-UVS ultraviolet spectrograph on board the Juno spacecraft as a particle detector rather than a photon collector. We analyze artifacts looking like a bar code in ultraviolet images of Jupiter's aurora to investigate a very specific kind of radiation above the poles. These bar code events are caused by very sporadic bursts of relativistic electrons arising from the aurora itself, rather than the radiation belts. This indicates the existence of a very efficient mechanism accelerating electrons upward right above Jupiter's atmosphere. |
英文关键词 | Jupiter Juno aurora relativistic electrons radiation Juno-UVS |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000453250000002 |
WOS关键词 | POLAR-REGIONS ; IMPULSIVE BURSTS ; MAGNETOSPHERE ; EMISSIONS ; PARTICLES |
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/27468 |
专题 | 气候变化 |
作者单位 | 1.Univ Liege, LPAP, STAR Inst, Liege, Belgium; 2.Southwest Res Inst, San Antonio, TX USA; 3.JPL, Pasadena, CA USA; 4.Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA; 5.APL, Laurel, MD USA; 6.Space Res Corp, Annapolis, MD USA; 7.NASA Goddard Spaceflight Ctr, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | Bonfond, B.,Gladstone, G. R.,Grodent, D.,et al. Bar Code Events in the Juno-UVS Data: Signature similar to 10MeV Electron Microbursts at Jupiter[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(22):12108-12115. |
APA | Bonfond, B..,Gladstone, G. R..,Grodent, D..,Gerard, J. -C..,Greathouse, T. K..,...&Connerney, J. E. P..(2018).Bar Code Events in the Juno-UVS Data: Signature similar to 10MeV Electron Microbursts at Jupiter.GEOPHYSICAL RESEARCH LETTERS,45(22),12108-12115. |
MLA | Bonfond, B.,et al."Bar Code Events in the Juno-UVS Data: Signature similar to 10MeV Electron Microbursts at Jupiter".GEOPHYSICAL RESEARCH LETTERS 45.22(2018):12108-12115. |
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