论文标题
行星近亲的世俗演变：一般相对论的影响
Secular evolution of close in planets: the effects of general relativity
论文作者
论文摘要
由于行星散射，kozai或世俗的迁移，系统中的一对行星可能最终在偏心轨道上靠近宿主恒星。在这种情况下，一般相对论和世俗的扰动具有相当的时间尺度，并且可能会彼此干扰，对两个行星的偏心和气候演变的相关影响。我们通过分析和数值整合探索了世俗进化如何通过广泛不同初始条件的一般相对性改变。我们发现，当更快的世俗频率接近一般的相对性进攻率时，当外行星从内部行星移开时，它会一种式地发生，并且它会放松，并且会出现内在行星的适当偏心率的显着阻尼。由于人体的世俗相互作用的变化，外行星的适当偏心率也降低了。在世俗演变过程中，降低了这两个行星的峰偏心率对它们的稳定性具有重要意义。当包括一般相对论时，发现大量的两个行星系统，否则由于相互的世俗扰动而混乱。
Pairs of planets in a system may end up close to their host star on eccentric orbits as a consequence of planet planet scattering, Kozai or secular migration. In this scenario, general relativity and secular perturbations have comparable timescales and may interfere with each other with relevant effects on the eccentricity and pericenter evolution of the two planets. We explore, both analytically and via numerical integration, how the secular evolution is changed by general relativity for a wide range of different initial conditions. We find that when the faster secular frequency approaches the general relativity precession rate, which tipically occurs when the outer planet moves away from the inner one, it relaxes to it and a significant damping of the proper eccentricity of the inner planet occurs. The proper eccentricity of the outer planet is reduced as well due to the changes in the secular interaction of the bodies. The lowering of the peak eccentricities of the two planets during their secular evolution has important implications on their stability. A significant number of two planet systems, otherwise chaotic because of the mutual secular perturbations, are found stable when general relativity is included.
