arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.07501astro-ph.GA
收藏

暗物质存在于Milky Way内部的证据.真的吗?

Evidence for dark matter in the inner Milky Way...Really?

R. Durazo, X. Hernandez, S. Mendoza

摘要:

以下是对Iocco等人最近的一封信的评论。(2015,arXiv:1502.03821)作者声称已经发现“......暗物质存在的有力证据. ".这封有问题的信提供了银河系最近的旋转曲线观测的汇编,以及基于最近重子物质分布测量的牛顿旋转曲线估计。前者和后者之间的不匹配被认为是“暗物质存在的证据“。在这里,我们证明了所报道的差异是众所周知的引力异常,当动力学加速度接近临界米尔格罗姆加速度a_0 = 1.2 \times 10^{-10} m / s^2时,它总是出现。此外,使用一个简单的修正引力定律,Iocco等人(2015)提出的重子模型产生的动力学与观测到的旋转值一致。

英文摘要:

The following is a comment on the recent letter by Iocco et al. (2015, arXiv:1502.03821) where the authors claim to have found "...convincing proof of the existence of dark matter...". The letter in question presents a compilation of recent rotation curve observations for the Milky Way, together with Newtonian rotation curve estimates based on recent baryonic matter distribution measurements. A mismatch between the former and the latter is then presented as "evidence for dark matter". Here we show that the reported discrepancy is the well known gravitational anomaly which consistently appears when dynamical accelerations approach the critical Milgrom acceleration a_0 = 1.2 \times 10^{-10} m / s^2. Further, using a simple modified gravity force law, the baryonic models presented in Iocco et al. (2015), yield dynamics consistent with the observed rotation values.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑