Time Variation of Fine-Structure Constant Constrained by [O III] Emission-Lines at 1.1

2023/10/27 by Li Ge, Luming Sun, Li, Ge +5 · 1 citation
Physics and Astronomy · #Stellar, planetary, and galactic studies #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research

paper · pdf · doi:10.48550/arxiv.2310.17947

Abstract

[O III]λλ4960,5008 doublet are often the strongest narrow emission lines in starburst galaxies and quasi-stellar objects (QSOs), and thus are a promising probe to possible variation of the fine-structure constant α over cosmic time. Previous such studies using QSOs optical spectra were limited to z<1. In this work, we constructed a sample of 40 spectra of Lyα emitting galaxies (LAEs) and a sample of 46 spectra of QSOs at 1.09

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• Fundamental constants: from measurement to the universe, a window on gravitation and cosmology

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