Abstract

We want to briefly review the cosmological perturbations with some reflections about vorticity. Indeed, vorticity has rarely been studied in the early Universe and in cosmology. This topic has become a subject of study only in the recent years. Starting from a Gamow reflection, we assume that the space of the newborn and hot Universe may have had turbulent areas. These regions could represent small deviations from homogeneity, and they could be the origin of rotation of nascent galaxies and seeds for the galactic structures. These vortices have decreased their angular velocity during the expansion, but it has not yet become zero. If today there is a residual angular velocity of these initial turbulences, we can talk about Keplerian motion in a rotating space. We think that this approach can lead to interesting results about galactic rotation curves and the MOND acceleration parameter.

中文翻译：

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物质的涡度还是空间的涡度？

摘要

我们想简要回顾一下宇宙扰动，并对涡度进行一些反思。确实，在早期的宇宙和宇宙学中很少研究涡度。该主题仅在最近几年才成为研究的主题。从伽莫夫反射开始，我们假设新生儿和炽热宇宙的空间可能具有湍流区域。这些区域可能代表同质性的微小偏差，它们可能是新生的星系和星系结构种子旋转的起点。这些涡旋在膨胀过程中减小了角速度，但尚未变为零。如果今天存在这些初始湍流的残余角速度，我们可以谈论旋转空间中的开普勒运动。