遥远物质的引力效应对旋涡星系自转曲线的影响
Gravitational effects of the faraway matter on the rotation curves of spiral galaxies
摘要：
最近表明，在宇宙学中，如果考虑到力的延迟和物质的离散性（及其空间相关性），遥远物质的引力作用具有相当相关的影响。事实上，远物质被发现施加，在测试粒子上，每单位质量的力的数量级为0.2 cH0。它在这里示出，这样的力可以占观察到的旋转速度曲线的螺旋星系，如果力被假定为是去相关超过一个足够大的距离，1千秒差距的顺序。特别地，我们拟合了星系NGC 3198，NGC 2403，UGC 2885和NGC 4725的自转曲线，而根本不需要引入任何暗物质。还考虑了两个星系呈现比开普勒衰变快的情况。
英文摘要：
It was recently shown that in cosmology the gravitational action of faraway matter has quite relevant effects, if retardation of the forces and discreteness of matter (with its spatial correlation) are taken into account. Indeed, far matter was found to exert, on a test particle, a force per unit mass of the order of 0.2 cH0 . It is shown here that such a force can account for the observed rotational velocity curves in spiral galaxies, if the force is assumed to be decorrelated beyond a sufficiently large distance, of the order of 1 kpc. In particular we fit the rotation curves of the galaxies NGC 3198, NGC 2403, UGC 2885 and NGC 4725 without any need of introducing dark matter at all. Two cases of galaxies presenting faster than keplerian decay are also considered.
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