论文标题
背景扰动的重力不稳定性类似磁盘样系统的非线性非平稳模型。 iv。星系中的两个环结构的形成
Gravitational Instability of Perturbations in a Background Nonlinear Nonstationary Model of a Disk-Like System. IV. Formation of two-ring structures in galaxies
论文作者
论文摘要
为了确定星系中两个环结构形成的确切标准，我们研究了相应的结构振动模式的重力不稳定性问题，该模式在复合磁盘模型的背景下[1-3]，该模型具有确切的非组织性非线性定律。得出了模型的给定结构振动模式的分散方程的非平稳类似物，并获得了其分析结果。对环形振荡模式的不稳定性的增量进行比较分析，以确定其表现对模型主要物理参数的特征时间的依赖性。
In order to identify the exact criteria for the formation of two-ring structures in galaxies, we studied the issue of gravitational instability of the corresponding structural vibration modes against the background of a composite disk model [1-3], which has an exact nonlinear law of nonstationarity. Nonstationary analogs of dispersion equations for the given structural vibration modes of the model are derived and the results of their analysis are obtained. A comparative analysis of the increments of instabilities of ring-like oscillation modes is carried out to determine the dependence of their characteristic times of manifestation on the main physical parameters of the model.
