论文标题
分析环和海王星的小卫星
Analysing the region of the rings and small satellites of Neptune
论文作者
论文摘要
1989年的Voyager 2 Flyby期间发现了Neptune的环系统和小卫星（Smith等人1989年）。在这项工作中，我们分析了可以概述系统的扩散图。结果，我们发现靠近每个卫星的不稳定和稳定区域的宽度。距卫星更远的最内向的厨房环位于一个稳定的区域，而拉塞尔环（W = 4000公里）的内部边界在稳定的区域，具体取决于其偏心。 Le Verrier和Adams戒指也是如此，对于偏心率的少量值也是稳定的。它们只能在E <0.012的值中生存到近距离卫星扰动。当考虑到太阳辐射力时，由1 {$μ$} M组成的环的寿命约为$ 10^4 $年，而较大的颗粒（半径为10 {$μ$} m）可以生存长达10 5年。卫星Naiad，Thalassa和Despina可以帮助补充Le Verrier，Arago和Lassel环的损失颗粒，而Galatea，Larissa和Proteus产生的弹射器没有足够的速度无法从卫星引力中逃脱。
The ring system and small satellites of Neptune were discovered during Voyager 2 flyby in 1989 (Smith et al.1989). In this work we analyse the diffusion maps which can give an overview of the system. As a result we found the width of unstable and stable regions close to each satellite. The innermost Galle ring, which is further from the satellites, is located in a stable region, while Lassel ring (W = 4000 km) has its inner border in a stable region depending on its eccentricity. The same happens to the Le Verrier and Adams rings , they are stable for small values of the eccentricity. They can survive to the close satellites perturbation only for values of e < 0.012. When the solar radiation force is taken into account the rings composed by 1{$μ$}m sized particles have a lifetime of about $10^4$ years while larger particles (10{$μ$}m in radius) can survive up to 10 5 years. The satellites Naiad, Thalassa and Despina can help replenish the lost particles of the Le Verrier, Arago and Lassel rings, while the ejecta produced by Galatea, Larissa and Proteus do not have enough velocity to escape from the satellite gravity.
