观测数据支持局部空洞吗?

R. Cai, Jiajian Ding, Zongkuan Guo, Shao-Jiang Wang, Wang-Wei Yu
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引用次数: 11

摘要

哈勃膨胀率的不同局部直接测量值与λ -冷暗物质模型从宇宙微波背景观测中推断出的结果之间日益加剧的紧张关系,如果不是由观测系统或局部偏差引起的,可能是新物理学的确凿证据。我们通过全局拟合Pantheon样本对由非齐次但各向同性Lema\ \ {i} trer - tolman - bondi度规描述的局部空洞径向剖面函数中的所有参数,完成了先前关于局部空洞局部偏差的研究。我们的结论加强了先前的研究,即哈勃常数上的当前张力不能仅由局部空洞来挽救。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Do the observational data favor a local void?
The increasing tension between the different local direct measurements of the Hubble expansion rate and that inferred from the Cosmic Microwave Background observation by $\Lambda$-Cold-Dark-Matter model could be a smoking gun of new physics, if not caused by either observational systematics or local bias. We complete previous investigation on the local bias from a local void by globally fitting the Pantheon sample over all parameters in the radial profile function of a local void described by an inhomogeneous but isotropic Lema\^{i}tre-Tolman-Bondi metric with a cosmological constant. Our conclusion strengths the previous studies that the current tension on Hubble constant cannot be saved by a local void alone.
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