论文标题

在旋转支持的星系中,测试带有外场效应的数值解的重力理论

Testing Modified Gravity Theories with Numerical Solutions of the External Field Effect in Rotationally Supported Galaxies

论文作者

Chae, Kyu-Hyun, Lelli, Federico, Desmond, Harry, McGaugh, Stacy S., Schombert, James M.

论文摘要

强大的等效原理被米尔格罗米亚动力学(MOND)的重力理论违反了外部田间效应的作用。我们通过比较了附近宇宙的平均外部田间强度的两个独立估计值来测试两种不同的拉格朗日理论。旋转曲线的水上呈外场强度与大规模宇宙环境相符,而Qumond降低的值较高。这表明,作为潜在相对论修改的重力理论的有效非相关限制,因此可能比Qumond优先优先。

The strong equivalence principle is violated by gravity theories of Milgromian dynamics (MOND) through the action of the external field effect. We test two different Lagrangian theories AQUAL and QUMOND based on their numerical solutions of the external field effect, by comparing two independent estimates of the mean external field strength of the nearby universe: a theory-deduced value from fitting the outer rotation curves of 114 galaxies and an empirical value from the large-scale distribution of cosmic baryons. The AQUAL-deduced external field strength from rotation curves agrees with that from the large-scale cosmic environment, while QUMOND-deduced value is somewhat higher. This suggests that AQUAL is likely to be preferred over QUMOND as an effective non-relativistic limit of a potential relativistic modified gravity theory.

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