The time variation of the fine structure constant: A statistical analysis of astronomical data

Abstract

We analyze different data of the variation of the fine structure constant obtained with different methods to check their consistency.We test consistency using the modified Student test and confidence intervals. We split the data sets in smaller intervals. A criterion for this selection is proposed. Results show consistency for reduced intervals for each pair of data sets considered. Results are at variance with the ones obtained considering mean values over the whole interval.

9 pages, 1 figure, replaced to match version to be published in Astronomy and Astrophysics

References in corpus (43)

• Kaluza-Klein Gravity
• Further Evidence for Cosmological Evolution of the Fine Structure Constant
• A Search for Time Variation of the Fine Structure Constant
• Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra
• New Limits to the Drift of Fundamental Constants from Laboratory Measurements
• Violations of the equivalence principle in a dilaton-runaway scenario
• Runaway dilaton and equivalence principle violations
• The Oklo bound on the time variation of the fine-structure constant revisited
• Limits on the time variation of the electromagnetic fine-structure constant in the low energy limit from absorption lines in the spectra of distant quasars
• A Search for Variations of Fundamental Constants using Atomic Fountain Clocks
• New limit on the present temporal variation of the fine structure constant
• Testing the stability of fundamental constants with the 199Hg+ single-ion optical clock
• Probing the cosmological variation of the fine-structure constant: Results based on VLT-UVES sample
• The nuclear interaction at Oklo 2 billion years ago
• Evolution of the Fine Structure Constant Driven by Dark Matter and the Cosmological Constant
• Probing the variability of the fine-structure constant with the VLT/UVES
• Astrophysical Limits on the Evolution of Dimensionless Physical Constants over Cosmological Time
• The Behaviour of Varying-Alpha Cosmologies
• Further constraints on variation of the fine structure constant from alkali doublet QSO absorption lines
• Constraints on changes in fundamental constants from a cosmologically distant OH absorber/emitter
• Improved constraints on possible variation of physical constants from H I 21cm and molecular QSO absorption lines
• Revision of VLT/UVES constraints on a varying fine-structure constant
• On the variation of the fine-structure constant: Very high resolution spectrum of QSO HE 0515-4414
• A Re-examination of the ${}^{187}$Re Bound on the Variation of Fundamental Couplings
• Does the fine-structure constant vary with cosmological epoch?
• Comment on "Limits on the Time Variation of the Electromagnetic Fine-Structure Constant in the Low Energy Limit from Absorption Lines in the Spectra of Distant Quasars"
• Fine-structure constant variability, equivalence principle and cosmology
• Most precise single redshift bound to Delta alpha/alpha
• A new measure of Delta alpha/alpha at redshift z = 1.84 from very high resolution spectra of Q1101-264
• VLT/UVES constraints on the cosmological variability of the fine-structure constant
• Probing the time-variation of the fine-structure constant: Results based on Si IV doublets from a UVES sample
• Constraining the variation of the coupling constants with big bang nucleosynthesis
• Measuring $\alpha$ in the Early Universe: CMB Temperature, Large-Scale Structure and Fisher Matrix Analysis
• Cosmological Constraints on a Dynamical Electron Mass
• Probing variations in fundamental constants with radio and optical quasar absorption-line observations
• A Laboratory for Constraining Cosmic Evolution of the Fine Structure Constant: Conjugate 18 cm OH Lines Toward PKS 1413+135 at z=0.2467
• Brane World Cosmologies with Varying Speed of Light
• Gauge Coupling Variation in Brane Models
• Varying Constants in Brane World Scenarios
• New constraints on varying $\alpha$
• Bekenstein model and the time variation of the strong coupling constant
• Variable-Speed-of-Light Cosmology from Brane World Scenario
• Studying the Variation of the Fine Structure Constant Using Emission Line Multiplets

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• The value of the fine structure constant over cosmological times
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• Variation of the fine-structure constant: an update of statistical analyses with recent data
• Estimations of the cosmological parameters from the observational variation of the fine structure constant