利用橢圓限制性三體運動模擬土星F環與牧羊犬衛星普羅米修斯的重力與碰撞交互作用;A Simulation Of The Gravitational And Collisional Interaction Of Saturn′s F Ring With The Shepherding Moon, Prometheus, By Elliptic Restricted Three-Body Calculation

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题名:	利用橢圓限制性三體運動模擬土星F環與牧羊犬衛星普羅米修斯的重力與碰撞交互作用;A Simulation Of The Gravitational And Collisional Interaction Of Saturn′s F Ring With The Shepherding Moon, Prometheus, By Elliptic Restricted Three-Body Calculation
作者:	陳徵;Chen,Cheng
贡献者:	天文研究所
关键词:	普羅米修斯;土星;F環;三體;Prometheus;Saturn;F ring;three body
日期:	2016-07-18
上传时间:	2016-10-13 12:43:54 (UTC+8)
出版者:	國立中央大學
摘要:	由於離心率的緣故，土星的F環和其中一個牧羊犬衛星，普羅米修斯會在每個軌道周期相互接近。在普羅米修斯接近F環的過程中，會在F環盤面上產生出糾結且分段的構造，且由於重力散射，F環中的粒子也會撞擊到普羅米修斯的表面。我們利用限制性橢圓三體運動來研究F環的粒子受到普羅米修斯的影響的運動，來了解重力擾動與在洛希極限附近的質量損失(增加)。;Because of their eccentricities, the narrow F ring of Saturn and one of the shepherding moons, Prometheus, can intercept each other′s orbit. This process would lead to the formation of kinky and segmented structures along the F ring when Prometheus penetrate into the F ring. Besides gravitational scattering, collisional impact at the surface of Prometheus by the F ring particle could also occur. The numerical method in the elliptic restricted three-body problem is used to simulate the orbital motion of the F ring particles under the influence of Prometheus with a view to understand the related dynamical perturbation and mass loss (or accretion) effect in the vicinity of the Roche limit.
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