气候变化领域集成服务门户(CCPortal): The Morphology of Saturn's Aurorae Observed During the Cassini Grand Finale

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DOI	10.1029/2019GL085800
	The Morphology of Saturn's Aurorae Observed During the Cassini Grand Finale
	Bader A.; Cowley S.W.H.; Badman S.V.; Ray L.C.; Kinrade J.; Palmaerts B.; Pryor W.R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:2
英文摘要	Cassini's mission exploring the Saturn system ended with the Grand Finale, a series of orbits bringing the spacecraft closer to the planet than ever before and providing unique opportunities for observations of the ultraviolet aurorae. This study presents a selection of high-resolution imagery showing the aurorae's small-scale structure in unprecedented detail. We find the main arc to vary between a smooth and a rippled structure, likely indicating quiet and disturbed magnetospheric conditions, respectively. It is usually accompanied by a diffuse and dim outer emission on its equatorward side which appears to be driven by wave scattering of hot electrons from the inner ring current into the loss cone. The duskside is characterized by highly dynamic structures which may be signatures of radial plasma injections. This image set will be the only high-resolution data for the foreseeable future and hence forms an important basis for future auroral research on Saturn. ©2019. The Authors.
英文关键词	Hot electrons; Magnetosphere; Morphology; Orbits; Dynamic structure; High resolution data; High resolution imagery; Image sets; Inner rings; Radial plasma; Small-scale structures; Wave scattering; Planets; aurora; imagery; magnetosphere; plasma; Saturn; spacecraft; spatial resolution; ultraviolet radiation; wave scattering
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170824
作者单位	Department of Physics, Lancaster University, Lancaster, United Kingdom; Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom; Laboratoire de Physique Atmosphérique et Planétaire, Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liége, Liége, Belgium; Science Department, Central Arizona College, Coolidge, AZ, United States
推荐引用方式 GB/T 7714	Bader A.,Cowley S.W.H.,Badman S.V.,et al. The Morphology of Saturn's Aurorae Observed During the Cassini Grand Finale[J],2020,47(2).
APA	Bader A..,Cowley S.W.H..,Badman S.V..,Ray L.C..,Kinrade J..,...&Pryor W.R..(2020).The Morphology of Saturn's Aurorae Observed During the Cassini Grand Finale.Geophysical Research Letters,47(2).
MLA	Bader A.,et al."The Morphology of Saturn's Aurorae Observed During the Cassini Grand Finale".Geophysical Research Letters 47.2(2020).