DOI: 10.1002/2016GL071757
论文题名: Dynamics of the flares in the active polar region of Jupiter
作者: Bonfond B. ; Grodent D. ; Badman S.V. ; Gérard J.-C. ; Radioti A.
刊名: Geophysical Research Letters
ISSN: 0094-8343
EISSN: 1944-8074
出版年: 2016
卷: 43, 期: 23 起始页码: 11963
结束页码: 11970
语种: 英语
英文关键词: aurora
; flare
; Hubble Space Telescope
; Jupiter
; periodicity
Scopus关键词: Magnetic fields
; Magnetosphere
; aurora
; flare
; Hubble space telescopes
; Jupiters
; periodicity
; Space telescopes
英文摘要: The duskside of the polar region of Jupiter's UV aurorae, called the active region, sometimes exhibits quasiperiodic (QP) flares on timescales of 2–3 min. Based on Hubble Space Telescope Far-UV time-tag images, we show for the first time that the Northern Hemisphere also displays QP flares. The area covered by these flares can reach up to 2.4 × 108 km2 (i.e., the whole active region) but often only involves an area an order of magnitude smaller. Using a magnetic field mapping model, we deduced that these areas correspond to the dayside outer magnetosphere. In our data set, quasiperiodic features are only seen on half of the cases, and even on a given observation, a region can be quiet for one half and blinking on the other half. Consecutive observations in the two hemispheres show that the brightening can occur in phase. Combined with the size and location of the flares, this behavior suggests that the QP flares most likely take place on closed magnetic field lines. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007454040&doi=10.1002%2f2016GL071757&partnerID=40&md5=9b1460a797ac70caf081dc84116a8da3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9306
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Space Sciences, Technologies and Astrophysics Research (STAR) Institute, LPAP, Université de Liège, Liège, Belgium
Recommended Citation:
Bonfond B.,Grodent D.,Badman S.V.,et al. Dynamics of the flares in the active polar region of Jupiter[J]. Geophysical Research Letters,2016-01-01,43(23).