论文标题
Galaxy旋转方向的可能大规模对齐 - 分析来自SDS，PAN-Starrs和HST的10个数据集
A Possible Large-scale Alignment of Galaxy Spin Directions -- Analysis of 10 Datasets from SDSS, Pan-STARRS, and HST
论文作者
论文摘要
多个不同望远镜进行的多种观察结果表明，在天空的不同部分旋转的螺旋星系数量之间不对称。关于自旋方向可能不对称的直接问题之一是分布是否形成宇宙学尺度轴。本文分析并比较了过去十年中发表的10个不同数据集，这些数据集由SDSS，Pan-Starrs和Hubble Space望远镜收集。数据集包含由旋转方向隔开的螺旋星系，并且分布可以显示偶极子轴。分析表明，最可能的偶极子轴的方向在具有相似平均红移但平均红移不同的数据集的数据集中是一致的。分析还表明，最可能的轴的位置与数据集中星系的平均红移相关。也就是说，当红移更高时，最可能的轴的位置会移动，并且相关性在统计上是显着的。这提供了一定的指示，表明由星系旋转方向的分布或宇宙学尺度结构形成可能的轴，该结构在与地球的一定距离处达到峰值。
Multiple observations made by several different telescopes have shown asymmetry between the number of spiral galaxies rotating in opposite directions in different parts of the sky. One of the immediate questions regarding the possible asymmetry of the spin directions is whether the distribution forms a cosmological-scale axis. This paper analyzes and compares 10 different datasets published in the past decade, collected by SDSS, Pan-STARRS, and Hubble Space Telescope. The datasets contain spiral galaxies separated by their spin direction, and the distribution can show dipole axes. The analysis shows that the directions of the most probable dipole axes are consistent in datasets that have similar average redshift, but different between datasets that have different average redshift. The analysis also shows that the location of the most probable axis correlates with the average redshift of the galaxies in the datasets. That is, the location of the most probable axis shifts when the redshift gets higher, and the correlation is statistically significant. This provides a certain indication of a drift in a possible axis formed by the distribution of galaxy spin directions, or a cosmological scale structure that peaks at a certain distance from Earth.
