论文标题
带有倾斜卫星的扁身体周围的戒指动力学：Haumea的情况
Ring dynamics around an oblate body with an inclined satellite: The case of Haumea
论文作者
论文摘要
最近发现的环和大量卫星周围围绕着次要的卫星和矮人行星表明，它们通常可能共存，例如在Haumea周围。被植物的中央机构和倾斜卫星扰动的环可能会散布在短时间内。在分析和数值上探索了环可能生存的条件。环颗粒的轨迹在三轴椭圆形和（a）大量卫星（包括碰撞的影响）的影响下集成了。如果卫星在Kozai Lidov政权中具有倾斜度，则最初在中央体内赤道平面形成的环将受到破坏（39.2 <i <144.8）。对于较低的倾斜，由于强烈的碰撞阻尼，环可能会放松到卫星轨道平面。另一方面，即使在Kozai Lidov Cycles的情况下，显着的J2项很容易抑制倾斜卫星的扰动。但是，如果该环最初相对于赤道平面而倾斜，则相同的J2扰动不是保护因素，而是在短时间上破坏环。尽管撞击速度的增加是由于身体的不对称形状以及中央机构旋转的3：1共振，但在Haumea周围发现的环还是稳定的。应在赤道平面的接近度中搜索接近扁的中心体的环，其中J2扰动可以保护其免受外部倾斜卫星的扰动。在倾斜的配置中，J2项本身是破坏性的。
The recent discovery of rings and massive satellites around minor bodies and dwarf planets suggests that they may often coexist, as for example around Haumea. A ring perturbed by an oblate central body and by an inclined satellite may disperse on a short timescale. The conditions under which a ring may survive are explored both analytically and numerically. The trajectories of ring particles are integrated under the influence of the gravitational field of a triaxial ellipsoid and (a) massive satellite(s), including the effects of collisions. A ring initially formed in the equatorial plane of the central body will be disrupted if the satellite has an inclination in the Kozai Lidov regime (39.2 < i < 144.8). For lower inclinations, the ring may relax to the satellite orbital plane thanks to an intense collisional damping. On the other hand, a significant J2 term easily suppresses the perturbations of an inclined satellite within a critical semimajor axis, even in the case of Kozai Lidov cycles. However, if the ring is initially inclined with respect to the equatorial plane, the same J2 perturbations are not a protective factor but instead disrupt the ring on a short timescale. The ring found around Haumea is stable despite the rise in the impact velocities that is due to the asymmetric shape of the the body and the presence of a 3:1 resonance with the rotation of the central body. A ring close to an oblate central body should be searched for in the proximity of the equatorial plane, where the J2 perturbations protect it against the perturbations of an external inclined satellites. In an inclined configuration, the J2 term is itself disruptive.
