Methods for the Study of the Dynamics of the Oort Cloud Comets II: Modelling the Galactic Tide
Methods for the Study of the Dynamics of the Oort Cloud Comets II: Modelling the Galactic Tide
复制标题
奥尔特云彗星动力学研究方法 II：银河潮汐建模
DOI：
10.1007/978-3-540-72984-6_10
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
H. Rickman
中科院分区：
文献类型：
--
作者：
M. Fouchard;C. Froeschlé;S. Breiter;R. Ratajczak;G. Valsecchi;H. Rickman
在本文中，我们提出了几个快速积分器和映射模型奥尔特云彗星的轨道摄动，由银河潮引起的。用这些模型计算的微扰与用Everhart 's RA15代码精确数值积分得到的微扰进行了比较。为了在计算速度和精度之间取得最佳折衷，有必要根据所考虑的彗星的半长斧a和偏心率e的值使用混合模型，即两种算法的组合。
In this paper we present several fast integrators and mappings which model the orbital perturbations of Oort cloud comets, caused by the Galactic tide. The perturbations computed with these models are compared with those obtained using an accurate numerical integration using Everhart’s RA15 code. In order to have the best compromise between the computing velocity and precision, it is shown that it is necessary to use a hybrid model i.e. a combination of two algorithms, according to the values of the semimajor axe a and the eccentricity-e of the considered comet.