The strands of the F ring disturbed by its closest satellites

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dc.contributor.authorWinter, S. M. Giuliatti [UNESP]
dc.contributor.authorMourao, D. C. [UNESP]
dc.contributor.authorFreitas, T. C. A. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:27:09Z
dc.date.available2014-05-20T15:27:09Z
dc.date.issued2006-01-01
dc.description.abstractSome Voyager images showed that the F ring of Saturn is composed of at least four separate, non-intersecting, strands covering about 45 degrees in longitude. According to Murray et al. [Murray, C.D., Gordon, M., Giuliatti Winter, S.M. Unraveling the strands of Saturn's F ring. Icarus 129, 304, 1997.] this structure may be caused by undetected satellites embedded in the gaps.Due to precession, the satellites Prometheus and Pandora and the ring particles can experience periodic close encounters. Giuliatti Winter et al. [Giuliatti Winter, S.M, Murray, C.D., Gordon, M. Perturbations to Saturn's F-ring strands at their closest approach to Prometheus. Plan. Space Sciences, 48, 817, 2000.] analysed the behaviour of these four strands at closest approach with the satellite Prometheus. Their work suggests that Prometheus can induce the ring particles to scatter in the direction of the planet, thus increasing the population of small bodies in this region.In this work we analysed the effects of Prometheus on the radial structure of Saturn's F ring during the Voyager and early Cassini epochs. Our results show that at Voyager epoch Prometheus, and also Pandora, had a negligible influence in the strands. However, during the Cassini encounter Prometheus could affect the strands significantly, scattering particles of the inner strand in the direction of the planet. This process can contribute to the replenishment of material in the region between the F ring and the A ring, where two rings have recently been discovered [Porco, C. et al. Cassini imaging science. Initial results on Saturn's rings and small Satellites. Science, 307, 1226, 2005].We also analyse the behaviour of undetected satellites under the effects of these two satellites by computing the Lyapunov Characteristic Exponent. Our results show that these satellites have a chaotic behaviour which leads to a much more complex scenario. The new satellite S/2004 S6 also presents a chaotic behaviour with can alter the dynamic of the system, since this satellite crosses the orbit of the strands. (C) 2006 COSPAR. Published by Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNESP, Grp Dinam Orbit & Planetol, BR-12500000 Guaratingueta, SP, Brazil
dc.description.affiliationUnespUNESP, Grp Dinam Orbit & Planetol, BR-12500000 Guaratingueta, SP, Brazil
dc.format.extent781-787
dc.identifierhttp://dx.doi.org/10.1016/j.asr.2006.06.014
dc.identifier.citationAdvances In Space Research. Oxford: Elsevier B.V., v. 38, n. 4, p. 781-787, 2006.
dc.identifier.doi10.1016/j.asr.2006.06.014
dc.identifier.issn0273-1177
dc.identifier.lattes9224861533404236
dc.identifier.urihttp://hdl.handle.net/11449/37197
dc.identifier.wosWOS:000202988100036
dc.identifier.wosWOS:000245033700033
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofAdvances in Space Research
dc.relation.ispartofjcr1.529
dc.relation.ispartofsjr0,569
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectplanetary ringspt
dc.subjectnumerical simulationspt
dc.subjectLyapunov Characteristic Exponentpt
dc.subjectsolar system dynamicspt
dc.titleThe strands of the F ring disturbed by its closest satellitesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes9224861533404236
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt
unesp.departmentMatemática - FEGpt

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Guaratinguetá - FEG - Faculdade de Engenharia e Ciências