Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-28T16:50:47.503Z Has data issue: false hasContentIssue false
  • English
  • Français

Strong limit on the spatial and temporal variations of the fine-structure constant

Published online by Cambridge University Press:  12 October 2016

T. D. Le
T. D. Le*
Affiliation:
Department of Physics, Center for Natural Science, Vietnam email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Observed spectra of quasars provide a powerful tool to test the possible spatial and temporal variations of the fine-structure constant α = e2/ћc over the history of the Universe. It is demonstrated that high sensitivity to the variation of α can be obtained from a comparison of the spectra of quasars and laboratories. We reported a new constraint on the variation of the fine-structure constant based on the analysis of the optical spectra of the fine-structure transitions in [NeIII], [NeV], [OIII], [OI] and [SII] multiplets from 14 Seyfert 1.5 galaxies. The weighted mean value of the α-variation derived from our analysis over the redshift range 0.035 < z < 0.281 Δα/α= (4.50 ± 5.53) \times 10-5. This result presents strong limit improvements on the constraint on Δα/α compared to the published in the literature

Keywords

galaxies: fundamental parameters (classification, colors, luminosities, masses, radii, etc.)cosmology: observationsmethods: data analysis
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S308: The Zeldovich Universe: Genesis and Growth of the Cosmic Web , June 2014 , pp. 628 - 630
Copyright
Copyright © International Astronomical Union 2016 

References

Bahcall, J. N. et al. 2004, ApJ 600, 520 CrossRefGoogle Scholar
Dirac, A. M. 1973, Nature 139, 323 CrossRefGoogle Scholar
Dzuba, V. A. et al. 1999, PRL 82, 888 CrossRefGoogle Scholar
Milne, E. A. 1937, Proc. R. Soc. Ser. A. 158, 324 Google Scholar
Le, T. D. 2014, AIP Conf. Proc. 1594, 23 CrossRefGoogle Scholar
Grupe, D. et al., 2005, AJ 130, 255 CrossRefGoogle Scholar
Shylakher, A. I., 1976, Nature 264, 340 Google Scholar