Variability of the proton-to-electron mass ratio on cosmological scales

Abstract

So far the only seemingly significant indication of a cosmological variation exists for the proton-to-electron mass ratio as stated by Reinhold et al. (2006). The measured indication of variation is based on the combined analysis of H2 absorption systems in the spectra of Q0405-443 and Q0347-383 at z=2.595 and z=3.025, respectively. The high resolution data of the latter is reanalyzed in this work to examine the influence of different fitting procedures and further potential nonconformities. This analysis cannot reproduce the significance achieved by the previous detection.

arXiv comment10 pages, 8 figures, as to appear in EPJ special - ACFC 2007 conference proceedings

References in corpus (5)

• On the variation of the fine-structure constant: Very high resolution spectrum of QSO HE 0515-4414
• A new constraint on the time dependence of the proton-to-electron mass ratio. Analysis of the Q 0347-383 and Q 0405-443 spectra
• A new measure of Delta alpha/alpha at redshift z = 1.84 from very high resolution spectra of Q1101-264
• Molecular Hydrogen in Damped Ly-alpha Systems: Spatial Distribution
• Evolution strategies applied to the problem of line profile decomposition in QSO spectra

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