Constraint on a variation of the proton‐to‐electron mass ratio from H2 absorption towards quasar Q2348−011

@article{Bagdonaite2011ConstraintOA,
  title={Constraint on a variation of the proton‐to‐electron mass ratio from H2 absorption towards quasar Q2348−011},
  author={Julija Bagdonaite and Michael Murphy and Lex Kaper and Wim Ubachs VU Amsterdam and Swinburne University and University of Amsterdam},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2011},
  volume={421},
  pages={419-425}
}
Molecular hydrogen (H2) absorption features observed in the line of sight to Q2348−011 at redshift zabs � 2.426 are analysed for the purpose of detecting a possible variation of the proton-to-electron mass ratio μ ≡ mp/me. By its structure, Q2348−011 is the most complex analysed H2 absorption system at high redshift so far, featuring at least seven distinctly visible molecular velocity components. The multiple velocity components associated with each transition of H2 were modelled… 

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