论文标题
银河暗物质的效果来自纯粹的一般相对论的几何方面
Galactic dark matter effects from purely geometrical aspects of General Relativity
论文作者
论文摘要
我们研究了一般相对性的框架中的椎间盘星系，以关注即使在低能限制下，对于纯粹的牛顿方法也有相关的校正。我们的分析包括考虑低能扩展和精确解决方案的模型，使其明确了这些不同方法之间的联系。特别是，我们专注于两个不同的限制：众所周知的引力类比和一个新的限制，称为强力磁性，它的校正与牛顿术语的顺序相同。我们表明，通用解决方案类别的这两个限制可以解释观察到的平坦速度曲线，这与使用牛顿模型发生的情况相反，牛顿模型需要进行暗物质贡献。因此，我们建议对一定量的暗物质效应的几何起源。
We study disc galaxies in the framework of General Relativity to focus on the possibility that, even in the low energy limit, there are relevant corrections with respect to the purely Newtonian approach. Our analysis encompasses the model both considering a low energy expansion and exact solutions, making it clear the connection between these different approaches. In particular, we focus on two different limits: the well known gravitomagnetic analogy and a new limit, called strong gravitomagnetism, which has corrections in c of the same order as the Newtonian terms. We show that these two limits of the general class of solution can account for the observed flat velocity profile, contrary to what happens using Newtonian models, where a dark matter contribution is required. Hence, we suggest a geometrical origin for a certain amount of dark matter effects.
