Abstract
The variation of the dimensionless fundamental physical constant \(\mu = {m}_{p}/{m}_{e}\) can be checked through observation of Lyman and Werner lines of molecular hydrogen in the spectra of distant QSOs. Only few systems have been used for the purpose providing different results between the different authors. Our intention is to resolve the current controversy on variation of μ and devise explanations for the different findings. An analysis based on independent data sets of QSO 0347-383 is put forward and new approaches for some of the steps involved in the data analysis are introduced. Drawing on two independent observations of a single absorption system in QSO 0347-383 our detailed analysis yields \(\Delta \mu /\mu = (15 \pm ({9}_{\mathrm{stat}} + {6}_{\mathrm{sys}})) \times 1{0}^{-6}\) at z abs = 3. 025. Current analyses tend to underestimate the impact of systematic errors. This work presents alternative approaches to handle systematics and introduces methods required for precision analysis of QSO spectra available in the near future.
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Notes
- 1.
Very Large Telescope at the European Southern Observatory (ESO).
- 2.
UV-Visual Echelle Spectrograph.
- 3.
Program ID 68.A-0106.
- 4.
Program ID 68.B-0115(A).
- 5.
Lines fitted with seemingly high precision and thus a low error reach higher offsets than lines with a larger estimated error at the same discrepancy in λobs. Clearly the lower error estimates merely reflects the statistical quality of the fit, not the true value of the specific line position.
References
S. Blatt et al., Phys. Rev. Lett.100 (2008) 14.
M. Centurión, P. Molaro, P. and S. Levshakov, arXiv 0910.4842.
B. Edlén, Metrologia 2 (1966) 71.
V.V. Flambaum and M.G. Kozlov, Phys. Rev. Lett.98 (2007) 24.
H. Fritzsch, arXiv:0902.2989
K. Griest et al., ApJ708 (2010) 158.
A. Ivanchik et al., ApJ440 (2005) 45.
J.A. King, J.K. Webb, M.T. Murphy and R.F. Carswell, Phys. Rev. Lett.101 (2008) 251304.
S.A. Levshakov, M. Dessauges-Zavadsky, S. D’Odorico and P. Molaro, MNRAS333 (2002) 373.
SS.A. Levshakov, M. Dessauges-Zavadsky, S. D’Odorico and P. Molaro, ApJ565 (2002) 696.
M. Lybanon, AJP 52 (1984) 22.
P.J. Mohr and B.N. Taylor, Rev. Mod. Phys. 72 (2000) 351.
A.L. Malec et al., arXiv: 1001.4080
P. Molaro et al., A&A481 (2008) 559.
P. Molaro, D. Reimers, I.I. Agafonova and S.A. Levshakov, EPJ 163 (2008) 173.
M.T. Murphy et al., MNRAS384 (2008) 1053.
R. Quast, R. Baade and D. Reimers, A&A431 (2005) 1167.
E. Reinhold et al. 2006, Phys. Rev. Lett. 96 (2006) 151101.
R.I. Thompson, Astrophys. Lett.16 (1975) 3.
R.I. Thompson et al., ApJ703 (2009) 1648.
W. Ubachs, R. Buning, K.S.E. Eikema and E. Reinhold, J. Molec. Spec. 241 (2007) 155.
M. Wendt and D. Reimers, EPJ 163 (2008) 197.
Acknowledgements
We are thankful for the support from the Collaborative Research Centre 676 and for helpful discussions on this topic with D. Reimers, S.A. Levshakov, P. Petitjean and M.G. Kozlov.
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Wendt, M., Molaro, P. (2011). Robust Limit on a Varying Proton-to-Electron Mass Ratio from a Single H2 System. In: Martins, C., Molaro, P. (eds) From Varying Couplings to Fundamental Physics. Astrophysics and Space Science Proceedings. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19397-2_10
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