112 citations · 699 across the 27 of their papers we have counts for
28 papers
Probing the electron-to-proton mass ratio gradient in the Milky Way with class I methanol masers
S. A. Levshakov, I. I. Agafonova, C. Henkel +4
We estimate limits on non-universal coupling of hypothetical hidden fields to standard matter by evaluating the fractional changes in the electron-to-proton mass ratio, mu = m_e/m_…
Constraints on the electron-to-proton mass ratio variation at the epoch of reionization
S. A. Levshakov, M. G. Kozlov, I. I. Agafonova
Far infrared fine-structure transitions of CI and CII and rotational transitions of CO are used to probe hypothetical variations of the electron-to-proton mass ratio mu = m_e/m_p a…
Testing the weak equivalence principle by differential measurements of fundamental constants in the Magellanic Clouds
S. A. Levshakov, K. -W. Ng, C. Henkel +4
Non-standard fields are assumed to be responsible for phenomena attributed to dark energy and dark matter. Being coupled to ordinary matter, these fields modify the masses and/or c…
Fundamental constants and high resolution spectroscopy
P. Bonifacio, H. Rahmani, J. B. Whitmore +14
Absorption-line systems detected in high resolution quasar spectra can be used to compare the value of dimensionless fundamental constants such as the fine-structure constant, alph…
The UVES Large Program for Testing Fundamental Physics: I Bounds on a change in alpha towards quasar HE 2217-2818
P. Molaro, M. Centurion, J. B. Whitmore +14
Absorption line systems detected in quasar spectra can be used to compare the value of the fine-structure constant, α, measured today on Earth with its value in distant galaxies. I…
Fluctuations of the intergalactic ionization field at redshift z ~ 2
I. I. Agafonova, S. A. Levshakov, D. Reimers +2
(Abridged) Aims. To probe the spectral energy distribution (SED) of the ionizing background radiation at z ~ 2 and to specify the sources contributing to the intergalactic radiatio…