| DOI: | 10.1002/grl.50812
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| 论文题名: | Auroral ion precipitation at Jupiter: Predictions for Juno |
| 作者: | Ozak N.; Cravens T.E.; Schultz D.R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8669
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| EISSN: | 1944-8400
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| 出版年: | 2013
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| 卷: | 40, 期:16 | | 起始页码: | 4144
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| 结束页码: | 4148
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| 语种: | 英语
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| 英文关键词: | aurora
; Juno
; Jupiter
; magnetosphere/ionosphere interactions
; X-rays
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| Scopus关键词: | aurora
; Field aligned currents
; Juno
; Jupiters
; Oxygen and sulfurs
; Polar-cap emission
; Precipitation process
; Secondary electrons
; Ionosphere
; Ions
; NASA
; Precipitation (chemical)
; X rays
; Forecasting
; aurora
; ice cap
; ion
; ionization
; ionosphere
; Jupiter
; magnetopause
; oxygen
; polar region
; precipitation (chemistry)
; satellite mission
; space technology
; sulfur
; X-ray diffraction
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| 英文摘要: | The spatially localized and highly variable polar cap emissions at Jupiter are part of a poorly understood current system linking the ionosphere and the magnetopause region. Strong X-ray emission has been observed from the polar caps and has been explained by the precipitation of oxygen and sulfur ions of several MeV energy. The present paper presents results of an extended model of the ion precipitation process at Jupiter. Specifically, we add to a previous model a more complete treatment of ionization of the atmosphere, generation of secondary electron fluxes and their escape from the atmosphere, and generation of downward field-aligned currents. Predictions relevant to observations by the upcoming NASA Juno mission are made, namely the existence of escaping electrons with energies from a few eV up to 10 keV, auroral H2 band emission rates of 80 kR, and downward field-aligned currents of at least 2 MA. Key Points We make predictions relevant to observations by the upcoming NASA Juno mission We predict escaping electrons with energies from a few eV to 10 keV We estimate downward field-aligned currents of about 2 MA as a lower limit. © 2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84882345876&doi=10.1002%2fgrl.50812&partnerID=40&md5=d6f319d768279538c6025d9b40363daf
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5933
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Physics and Astronomy, University of Kansas, Lawrence KS, United States
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| Recommended Citation: | |
Ozak N.,Cravens T.E.,Schultz D.R.. Auroral ion precipitation at Jupiter: Predictions for Juno[J]. Geophysical Research Letters,2013-01-01,40(16).
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