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首页> 外文期刊>Bulletin of the American Physical Society >APS -2017 Annual Fall Meeting of the APS Ohio-Region Section - Event - Examples of the MOND External Field Effect in Dwarf Spheroidal Galaxies: Fornax and Crater II
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APS -2017 Annual Fall Meeting of the APS Ohio-Region Section - Event - Examples of the MOND External Field Effect in Dwarf Spheroidal Galaxies: Fornax and Crater II

机译：APS -2017 APS俄亥俄地区分部年度秋季会议-活动-矮球状星系的MOND外部场效应示例：Fornax和Crater II

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摘要

The only viable alternative to the Cold Dark Matter (CDM) paradigm to date is Modified Newtonian Dynamics (MOND). The essence of MOND is that Newtonian gravity requires modification at extremely low accelerations (less than 10-10 m/s2). MOND has had great success in reproducing the flat rotation curves that are observed for spiral galaxies. Recently, MOND has been used to calculate dispersion profiles for dwarf spheroidal galaxies (dSph) that are satellite galaxies of the Milky Way and Andromeda, and the agreement with observations is encouraging. The external field effect (EFE) is a unique feature of MOND that has not been widely investigated. Here, we present the results of dispersion calculations for dSph's Fornax and Crater II that include the EFE. We compare both the bulk dispersions and the dispersion profiles to observations.
机译：迄今为止，对冷暗物质（CDM）范式的唯一可行替代方法是修改牛顿动力学（MOND）。 MOND的本质是牛顿重力需要以极低的加速度（小于10-10 m / s2）进行修改。 MOND在复制螺旋星系所观察到的平坦旋转曲线方面取得了巨大成功。最近，MOND已用于计算矮球状星系（dSph）的色散分布图，这些矮球状星系是银河系和仙女座系的卫星星系，与观测的一致性令人鼓舞。外部场效应（EFE）是MOND的一项独特功能，尚未得到广泛研究。在这里，我们介绍了包含EFE的dSph的Fornax和Crater II的色散计算结果。我们将整体色散和色散分布图与观察结果进行了比较。

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