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- W2095686041 abstract "We report a new constraint on the variation of the fine-structure constant based on the analysis of 15 Si iv doublets selected from a ESO-UVES sample. We find = over a redshift range of which is consistent with no variation in α. This result represents a factor of three improvement on the constraint on based on Si iv doublets compared to the published results in the literature. The alkali doublet method used here avoids the implicit assumptions used in the many-multiplet method that chemical and ionization inhomogeneities are negligible and isotopic abundances are close to the terrestrial value." @default.
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- W2095686041 date "2005-01-01" @default.
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- W2095686041 title "Probing the time-variation of the fine-structure constant: Results based on Si IV doublets from a UVES sample" @default.
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- W2095686041 doi "https://doi.org/10.1051/0004-6361:20041186" @default.
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