Cosmological Constraints on Neutrino Masses in Light of JWST Red and Massive Candidate Galaxies

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Research in Astronomy and Astrophysics Pub Date : 2024-03-18 DOI:10.1088/1674-4527/ad2c3f

Jian-Qi Liu, Zhi-Qi Huang, Yan Su

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Abstract

The overabundance of the red and massive candidate galaxies observed by the James Webb Space Telescope (JWST) implies efficient structure formation or large star formation efficiency at high redshift z ∼ 10. In the scenario of a low or moderate star formation efficiency, because massive neutrinos tend to suppress the growth of structure of the universe, the JWST observation tightens the upper bound of the neutrino masses. Assuming Λ cold dark matter cosmology and a star formation efficiency ∈[0.05, 0.3] (flat prior), we perform joint analyses of Planck+JWST and Planck+BAO+JWST, and obtain improved constraints ∑m _ν < 0.196 eV and ∑m _ν < 0.111 eV at 95% confidence level, respectively. Based on the above assumptions, the inverted mass ordering, which implies ∑m _ν ≥ 0.1eV, is excluded by Planck+BAO+JWST at 92.7% confidence level.

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从 JWST 红色和大质量候选星系看中微子质量的宇宙学约束

詹姆斯-韦伯太空望远镜（JWST）观测到的大量红色和大质量候选星系意味着在高红移 z ∼ 10 时结构的高效形成或恒星形成的高效率。在恒星形成效率较低或中等的情况下，由于大质量中微子倾向于抑制宇宙结构的增长，JWST 的观测收紧了中微子质量的上限。假设Λ冷暗物质宇宙学和恒星形成效率∈[0.05, 0.3]（平坦先验），我们对Planck+JWST和Planck+BAO+JWST进行了联合分析，在95%置信度下分别得到了改进的约束∑mν < 0.196 eV和∑mν < 0.111 eV。基于上述假设，普朗克+BAO+JWST在92.7%的置信水平上排除了倒质量排序，这意味着∑mν ≥ 0.1eV。

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来源期刊

Research in Astronomy and Astrophysics 地学天文-天文与天体物理

CiteScore

3.20

自引率

16.70%

发文量

2599

审稿时长

6.0 months

期刊介绍： Research in Astronomy and Astrophysics (RAA) is an international journal publishing original research papers and reviews across all branches of astronomy and astrophysics, with a particular interest in the following topics: -large-scale structure of universe formation and evolution of galaxies- high-energy and cataclysmic processes in astrophysics- formation and evolution of stars- astrogeodynamics- solar magnetic activity and heliogeospace environments- dynamics of celestial bodies in the solar system and artificial bodies- space observation and exploration- new astronomical techniques and methods