COA−Xsystem for constraining cosmological drift of the proton-electron mass ratio
نویسندگان
چکیده
منابع مشابه
A − X system for constraining cosmological drift of the proton - electron mass ratio
E. J. Salumbides,1,2 M. L. Niu,1 J. Bagdonaite,1 N. de Oliveira,3 D. Joyeux,3 L. Nahon,3 and W. Ubachs1 1Department of Physics and Astronomy, and LaserLaB, VU University, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands 2Department of Physics, University of San Carlos, Cebu City 6000, Philippines 3Synchrotron Soleil, Orme des Merisiers, St Aubin BP 48, 91192, GIF sur Yvette Cedex, France (...
متن کاملFirst constraint on cosmological variation of the proton-to-electron mass ratio from two independent telescopes.
A high signal-to-noise spectrum covering the largest number of hydrogen lines (90 H(2) lines and 6 HD lines) in a high-redshift object was analyzed from an observation along the sight line to the bright quasar source J2123-005 with the Ultraviolet and Visual Echelle Spectrograph on the European Southern Observatory Very Large Telescope (Paranal, Chile). This delivers a constraint on a possible ...
متن کاملKeck telescope constraint on cosmological variation of the proton-to-electron mass ratio
Molecular transitions recently discovered at redshift zabs = 2.059 towards the bright background quasar J2123−0050 are analysed to limit cosmological variation in the proton-toelectron mass ratio, μ ≡ mp/me. Observed with the Keck telescope, the optical echelle spectrum has the highest resolving power and largest number (86) of H2 transitions in such analyses so far. Also, (seven) HD transition...
متن کاملA new constraint on cosmological variability of the proton-to-electron mass ratio
Kaluza-Klein theories and multidimensional cosmological models predict variability of the fundamental physical constants over the cosmic time. Using the VLT/UVES high resolution spectra of the quasar Q0347–3819 and numerous electronic-vibrationalrotational lines of the H2 molecule identified at zabs = 3.025 we test possible changes in the proton-to-electron mass ratio μ0 = mp/me over the period...
متن کاملVariability of the proton-to-electron mass ratio on cosmological scales
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 detection exists for the proton-to-electron mass ratio as stated by Reinhold et al. [1]. The positive detection is based on the combined analysis of H2 absorption systems in the spectra of Q0405-443 and Q0347-383 at zabs...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2012
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.86.022510