论文标题
万神殿+sh0es数据的偶极子
The Dipole of the Pantheon+SH0ES Data
论文作者
论文摘要
在本文中，我们确定了Pantheon+数据的距离红移关系中的偶极子。我们发现，尽管它的幅度大致与宇宙微波背景中的偶极子大致一致，这归因于太阳系相对于宇宙休息框的运动，但该方向有所不同，其意义略高于$ 3 \ si $。尽管振幅取决于较低的红移截止，但方向非常稳定。对于订单$ z _ {\ rm cut} \ simeq 0.05 $及更高的订单剪切，不再检测到偶极子具有很高的统计显着性。对于特殊速度的红移校正，似乎扮演着一个重要的rol。
In this paper we determine the dipole in the distance redshift relation from the Pantheon+ data. We find that, while its amplitude roughly agrees with the dipole found in the cosmic microwave background which is attributed to the motion of the solar system with respect to the cosmic rest frame, the direction is different with a significance of slightly more than $3\si$. While the amplitude depends on the lower redshift cutoff, the direction is quite stable. For redshift cuts of order $z_{\rm cut} \simeq 0.05$ and higher, the dipole is no longer detected with high statistical significance. An important rôle seems to be played by the redshift corrections for peculiar velocities.
