Testing the fine-structure constant for a possible cosmological variation from the analysis of quasar spectra

Details Testing the fine-structure constant for a possible cosmological variation from the analysis of quasar spectra Testing the fine-structure constant for a possible cosmological variation from the analysis of quasar spectra

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994astl...20..771v&link_type=abstract

Astronomy Letters, Volume 20, Issue 6, November 1994, pp.771-776; Pis'ma v Astronomicheskii Zhurnal, Vol. 20, p. 883

Astronomy and Astrophysics

Astronomy

13

Scientific paper

A possible spatial and temporal dependence of the fine- structure constant α = e^2^/h/2π was investigated. For this purpose, the fine doublet splitting of absorption lines in quasar spectra was statistically analyzed on the basis of observational data published before March, 1994. Lines with redshifts z raging from 0.2 to 3.7, corresponding to the interval from 0.8 to 0.1 of the total age of the Universe t_0_, were considered. The a value over this period is shown to be coincident with the modern value (within statistical uncertainties). At a 95% significance level, the following upper limits were set:

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