论文标题
测试类星体的宇宙原理
A Test of the Cosmological Principle with Quasars
论文作者
论文摘要
我们通过测量泛量限制的，全套样品的角度分布中的偶极子来研究宇宙的大规模各向异性，该样本是由广场红外红外调查探险家（Wise）观察到的136万个类星体。该样品源自新的Catwise2020目录，该目录包含3.4和4.6 $μ$ M的深度光度测量，来自WISE任务的低温，后结晶和重新激活阶段。虽然类星体天空中偶极子的方向与宇宙微波背景（CMB）相似，但其幅度的幅度是预期的两倍，拒绝了CMB偶极子的规范，仅在P-value中以$ 5 \ times10^{-7} $ 4.9的$4.9σ$4.9σ$ 4.9岁$ 4.9岁$ 4.9岁$ 4.9岁$ 4.9岁以上的cmb偶极子解释。研究。我们的结果与宇宙原理相抵触，这是一致性$λ$ CDM模型的基本假设。
We study the large-scale anisotropy of the Universe by measuring the dipole in the angular distribution of a flux-limited, all-sky sample of 1.36 million quasars observed by the Wide-field Infrared Survey Explorer (WISE). This sample is derived from the new CatWISE2020 catalog, which contains deep photometric measurements at 3.4 and 4.6 $μ$m from the cryogenic, post-cryogenic, and reactivation phases of the WISE mission. While the direction of the dipole in the quasar sky is similar to that of the cosmic microwave background (CMB), its amplitude is over twice as large as expected, rejecting the canonical, exclusively kinematic interpretation of the CMB dipole with a p-value of $5\times10^{-7}$ ($4.9σ$ for a normal distribution, one-sided), the highest significance achieved to date in such studies. Our results are in conflict with the cosmological principle, a foundational assumption of the concordance $Λ$CDM model.
