New Limit on the Spatial and Temporal Variations of the Fine-Structure Constant Using High Redshifts of Quasar Spectra
Astrophysics, ISSN: 1573-8191, Vol: 58, Issue: 1, Page: 14-20
2015
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Metrics Details
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Article Description
Highly precise measurements on the light from distant quasars can served as a powerful tool to test the possible spatial and temporal variations of the fine-structure constant α = e /c during the evolution of the Universe. Here we set a limit on the possible cosmological space-time variations of α by comparing transitions in the absorption lines of the SiIV doublet observed in the early Universe with those mesured in the laboratory. The weighted mean value of the α-variation derived from our analysis over the redshift range 2.0 ≤ cps≤ 3.7 is Δα/α (-0.53 ± 0.72) ×10. This result improves the constraint on Δα/α by a factor of ~ seven compared to the published results in the literature.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84953356658&origin=inward; http://dx.doi.org/10.1007/s10511-015-9362-0; http://link.springer.com/10.1007/s10511-015-9362-0; http://link.springer.com/content/pdf/10.1007/s10511-015-9362-0; http://link.springer.com/content/pdf/10.1007/s10511-015-9362-0.pdf; http://link.springer.com/article/10.1007/s10511-015-9362-0/fulltext.html; https://dx.doi.org/10.1007/s10511-015-9362-0; https://link.springer.com/article/10.1007/s10511-015-9362-0
Springer Science and Business Media LLC
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