论文标题
本地组作为修改后的牛顿动力学的测试系统
The Local Group as a test system for Modified Newtonian Dynamics
论文作者
论文摘要
本地组（LG）是{适当的}测试系统，用于修改后的牛顿动力学，因为M31 Galaxy的加速度完全位于Deep Mond Segime $ a \ ll A_0 $中。我们将LG建模为$ M31 $的两个身体问题，以及银河系（MW）星系。 {扩展了先前的研究，我们还包括宇宙学的常数。}假设星系从同一地点和方法出现到当今测得的距离和速度（时机论点）的方法，可以预测LG：$（0.447 \ pm 0.005）的总质量。 LG的相应运动预测了过去的相遇。 Mond认为牛顿案预测的质量的Baryonic质量之间的比率为10.74美元\ pm 0.82 $。该比率与其他星系中暗物质与最重性物质之间的比率一致。
The Local Group (LG) is {an appropriate} test system for Modified Newtonian Dynamics, since the acceleration of M31 galaxy is fully in the deep MOND regime $a \ll a_0$. We model the LG as a two body problem of $M31$ and the Milky Way (MW) galaxies. {Extending previous studies, we also include the Cosmological Constant.} The assumption that in the big bang the galaxies emerged from the same place and approach to the measured distance and velocity today (the Timing Argument), predicts the total mass for the LG: $(0.447 \pm 0.005)\cdot 10^{12} M_{\odot}$. The corresponding motion of the LG predicts a past encounter. The ratio between the baryonic mass that MOND considers to the mass that Newtonian case predicted, which includes dark matter is $10.74 \pm 0.82$. This ratio agrees with the ratio between the dark matter and baryonic matter in other galaxies.
