用非普朗克CMB和DESI BAO联合分析重新评估h0张力

IF 5.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-04-22 DOI:10.1088/1475-7516/2025/04/057

Ye-Huang Pang, Xue Zhang, Qing-Guo Huang

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引用次数: 0

摘要

利用WMAP、WMAP+ACT和WMAP+SPT三组非普朗克CMB数据，结合DESI BAO数据和6dFGS、SDSS DR7和SDSS DR16等非DESI BAO数据，对空间平坦ΛCDM模型中的H0张力进行了重新评估。WMAP+DESI BAO的H0 = 68.86±0.68 km s-1 Mpc-1， WMAP+ACT+DESI BAO的H0 = 68.72±0.51 km s-1 Mpc-1， WMAP+SPT+DESI BAO的H0 = 68.62±0.52 km s-1 Mpc-1。非普朗克CMB+DESI BAO的局部测量结果分别显示出3.4σ， 3.7σ和3.8σ的张力，与普朗克CMB+DESI BAO相比，哈勃张力的显著性降低了1σ左右。此外，通过结合DESI BAO数据+非普朗克CMB测量数据，我们获得了比非DESI BAO数据+非普朗克CMB数据更严格的哈勃常数约束，并且降低了哈勃张力的意义。

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Reevaluating H 0 tension with non-Planck CMB and DESI BAO joint analysis

H ₀ tension in the spatially flat ΛCDM model is reevaluated by employing three sets of non-Planck CMB data, namely WMAP, WMAP+ACT, and WMAP+SPT, in conjunction with DESI BAO data and non-DESI BAO datasets including 6dFGS, SDSS DR7, and SDSS DR16. Our analysis yields H ₀ = 68.86 ± 0.68 km s^-1 Mpc^-1 with WMAP+DESI BAO, H ₀ = 68.72 ± 0.51 km s^-1 Mpc^-1 with WMAP+ACT+DESI BAO, and H ₀ = 68.62 ± 0.52 km s^-1 Mpc^-1 with WMAP+SPT+DESI BAO. The results of non-Planck CMB+DESI BAO exhibit a 3.4σ, 3.7σ, and 3.8σ tension with the SH0ES local measurement respectively which are around 1σ lower in significance for the Hubble tension compared to Planck CMB+DESI BAO. Moreover, by combining DESI BAO data+non-Planck CMB measurements, we obtain a more stringent constraint on the Hubble constant compared to non-DESI BAO data+non-Planck CMB data, as well as reducing the significance of the Hubble tension.

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来源期刊

Journal of Cosmology and Astroparticle Physics 地学天文-天文与天体物理

CiteScore

10.20

自引率

23.40%

发文量

632

审稿时长

1 months

期刊介绍： Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.