MOND与潮汐矮星系的质量差异
MOND and the mass discrepancies in tidal dwarf galaxies
摘要：
我认为在MOND的光的三个碎片星系最近讨论的Bournaud等人。在可见星系的几个尺度长度内，这些星系表现出几个因素的质量差异，可以说，这与冷暗物质范式背道而驰。我在这里表明，MOND预测的旋转速度与三个星系中每个星系的观测速度吻合得很好，只有观测到的重子物质作为引力源。因此，没有必要调用一种新的形式的重子，尚未检测到的物质，占主导地位的磁盘的螺旋星系，由Bournaud等人所主张的。我认为在其他理由，这种无处不在的光盘暗物质的存在，除了冷暗物质，是不可能的。
英文摘要：
I consider in light of MOND the three debris galaxies discussed recently by Bournaud et al.. These exhibit mass discrepancies of a factor of a few within several scale lengths of the visible galaxy, which, arguably, flies in the face of the cold dark matter paradigm. I show here that the rotational velocities predicted by MOND agree well with the observed velocities for each of the three galaxies, with only the observed baryonic matter as the source of gravity. There is thus no need to invoke a new form of baryonic, yet-undetected matter that dominates the disc of spiral galaxies, as advocated by Bournaud et al. I argue on other grounds that the presence of such ubiquitous disc dark matter, in addition to cold dark matter, is not likely.
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