Time variation of fine-structure constant constrained by [O iii ] emission-lines at 1.1 < z < 3.7
Article Swipe
Li Ge
,
Luming Sun
,
Xiangjun Chen
,
Hongyan Zhou
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1093/mnras/stad3240
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1093/mnras/stad3240
[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 Ly α emitting galaxies (LAEs) and a sample of 46 spectra of QSOs at 1.09 < z < 3.73 using the VLT/X-Shooter near-infrared spectra publicly available. We measured the wavelength ratios of the two components of the spin-orbit doublet and accordingly calculated α(z) using two methods. Analysis on all of the 86 spectra yielded Δα/α = (− 3 ± 6) × 10−5 with respect to the laboratory α measurements, consistent with no variation over the explored time interval. If assuming a uniform variation rate, we obtained α−1dα/dt = (− 3 ± 6) × 10−15 yr−1 within the last 12 Gyr. Extensive tests indicate that α variation could be better constrained using starburst galaxies’ spectra than using QSO spectra in future studies.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1093/mnras/stad3240
- https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stad3240/52454660/stad3240.pdf
- OA Status
- hybrid
- Cited By
- 4
- References
- 58
- Related Works
- 10
- OpenAlex ID
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- DOI
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https://doi.org/10.1093/mnras/stad3240Digital Object Identifier
- Title
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Time variation of fine-structure constant constrained by [O
iii ] emission-lines at 1.1 < z < 3.7Work title - Type
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articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-10-23Full publication date if available
- Authors
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Li Ge, Luming Sun, Xiangjun Chen, Hongyan ZhouList of authors in order
- Landing page
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https://doi.org/10.1093/mnras/stad3240Publisher landing page
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https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stad3240/52454660/stad3240.pdfDirect link to full text PDF
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stad3240/52454660/stad3240.pdfDirect OA link when available
- Concepts
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Physics, QSOS, Astrophysics, Spectral line, Galaxy, Emission spectrum, Fine-structure constant, Astronomy, Redshift, Electron, Quantum mechanicsTop concepts (fields/topics) attached by OpenAlex
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4Total citation count in OpenAlex
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2025: 2, 2024: 2Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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| referenced_works | https://openalex.org/W2129690999, https://openalex.org/W2041771947, https://openalex.org/W1986882119, https://openalex.org/W2075253707, https://openalex.org/W2466656277, https://openalex.org/W2166156153, https://openalex.org/W2130385608, https://openalex.org/W2334868016, https://openalex.org/W2547895327, https://openalex.org/W1995869161, https://openalex.org/W2578539035, https://openalex.org/W2059931168, https://openalex.org/W3092070101, https://openalex.org/W2074012601, https://openalex.org/W3022668787, https://openalex.org/W2999086497, https://openalex.org/W2110437504, https://openalex.org/W1972766878, https://openalex.org/W3088318530, https://openalex.org/W2949411114, https://openalex.org/W2195867308, https://openalex.org/W2520924849, https://openalex.org/W4321763650, https://openalex.org/W3130008409, https://openalex.org/W138059857, https://openalex.org/W2247696597, https://openalex.org/W3081407782, https://openalex.org/W4308883140, https://openalex.org/W2741387616, https://openalex.org/W4200193796, https://openalex.org/W2042168537, https://openalex.org/W2144518580, https://openalex.org/W2153130534, https://openalex.org/W1944033306, https://openalex.org/W1532931809, https://openalex.org/W2766049615, https://openalex.org/W1965889835, https://openalex.org/W2200889382, https://openalex.org/W2082478743, https://openalex.org/W2413278594, https://openalex.org/W1989503195, https://openalex.org/W1532239545, https://openalex.org/W2113474582, https://openalex.org/W2112028701, https://openalex.org/W3084395120, https://openalex.org/W2050190522, https://openalex.org/W1997008272, https://openalex.org/W4224987300, https://openalex.org/W2024972176, https://openalex.org/W2023087932, https://openalex.org/W3018394522, https://openalex.org/W2291265024, https://openalex.org/W3105419162, https://openalex.org/W3109360237, https://openalex.org/W3101098073, https://openalex.org/W3101870769, https://openalex.org/W3099500936, https://openalex.org/W3105582871 |
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