超新星对FLRW破裂的提示
Hints of FLRW Breakdown from Supernovae
摘要：
哈勃参数尺度上10%的差异构成了宇宙学的一个明显问题。在这里，考虑角分布的Ia型超新星（SN）在万神殿汇编和工作在平坦的$Λ$ CDM宇宙学，我们观察到更高的$H_0$和CMB偶极方向之间的相关性，确认我们以前的强透镜类星体\cite{Krishnan:2021dyb}的结果。具体地说，我们记录了$\sim 1$ km/s/Mpc的$H_0$的变化在对跖点的天空中的万神殿样本，这是明显的低$z$子样本（$z \lesssim 0.075$），并得到增强较高的红移SN。我们的工作提出了一种可能性，即我们可能在探测各向异性哈勃膨胀所需的精度，同时提供了一个具体的预测未来的推论$H_0$。
英文摘要：
A 10\% difference in the scale for the Hubble parameter constitutes a clear problem for cosmology. Here, considering angular distribution of Type Ia supernovae (SN) within the Pantheon compilation and working within flat $Λ$CDM cosmology, we observe a correlation between higher $H_0$ and the CMB dipole direction, confirming our previous results for strongly-lensed quasars \cite{Krishnan:2021dyb}. Concretely, we record a $\sim 1$ km/s/Mpc variation in $H_0$ at antipodal points on the sky within the Pantheon sample, which is evident in the Low $z$ subsample ($z \lesssim 0.075$) and gets enhanced by higher redshift SN. Our work raises the possibility that we may be at the precision required to probe anisotropic Hubble expansions, while providing a concrete prediction for future inferences of $H_0$.
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