广义相对论Miyamoto-Nagai星系的稳定性
Stability of general relativistic Miyamoto-Nagai galaxies
摘要：
本文对最近提出的广义相对论星系模型的稳定性作了较详细的研究。这个模型是一个广义相对论版本的著名的宫本永井模型，以及代表一个厚的星系盘。在保持时空度规冻结的一般一阶微扰下研究了盘的稳定性（不考虑引力辐射）。我们发现稳定性与盘的厚度有关。我们知道扁平星系比厚星系有更多的不稳定模式，扁平星系倾向于形成更复杂的结构，如环，棒和旋臂。
英文摘要：
The stability of a recently proposed general relativistic model of galaxies is studied in some detail. This model is a general relativistic version of the well known Miyamoto-Nagai model that represents well a thick galactic disk. The stability of the disk is investigated under a general first order perturbation keeping the spacetime metric frozen (no gravitational radiation is taken into account). We find that the stability is associated with the thickness of the disk. We have that flat galaxies have more not-stable modes than the thick ones i.e., flat galaxies have a tendency to form more complex structures like rings, bars and spiral arms.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
