Variability of the proton-to-electron mass ratio on cosmological scales
Hamburger Sternwarte, Universitat Hamburg, Gojenbergsweg 112, 21209 Hamburg, Germany
Corresponding author: firstname.lastname@example.org
The search for a possible variation of fundamental physical constants is newsworthy more than ever. A multitude of methods were developed. 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. . 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 zabs=2.595 and zabs=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 works.
© EDP Sciences, Springer-Verlag, 2008