论文标题
通过椭圆星系基本平面来限制重力理论
Constraining theories of gravity by fundamental plane of elliptical galaxies
论文作者
论文摘要
我们表明，椭圆星系的基本平面可用于获得对重力理论的观察约束。由于它连接到椭圆形的全局性质，它可以固定修饰重力的参数。具体而言，我们使用基本平面以Yukawa样校正来限制经过修改的重力理论，这些理论通常会在牛顿后极限中出现。在提供了如何得出这些校正的示例之后，我们首先分析了椭圆星系的速度分布，将修饰的重力与Yukawa样校正与天文数据进行了比较的理论结果。根据这些结果，可以约束与天文观测兼容的模型类别之间区分校正的参数。我们得出的结论是，基本平面可以用作标准工具，以探测弱场限制中不同重力理论。
We show that fundamental plane of elliptical galaxies can be used to obtain observational constraints on metric theories of gravity. Being it connected to global properties of ellipticals, it can fix parameters of modified gravity. Specifically, we use fundamental plane to constrain modified theories of gravity with Yukawa-like corrections which commonly emerge in the post-Newtonian limit. After giving examples on how these corrections are derived, we first analyze the velocity distribution of elliptical galaxies comparing theoretical results of modified gravity with Yukawa-like corrections with astronomical data. According to these results, it is possible to constrain the parameters of the corrections discriminating among classes of models compatible with astronomical observations. We conclude that fundamental plane can be used as a standard tool to probe different theories of gravity in the weak field limit.
