6 papers
Indications of electron-to-proton mass ratio variations in the Galaxy. III. 0.6mm methanol lines toward SgrB2(N) and Orion-KL
J. S. Vorotyntseva, S. A. Levshakov
In this paper, we show that methanol (CH3OH) torsional-rotational transitions, which have increased sensitivity to small variations of mu - the electron-to-proton mass ratio, are s…
Acetaldehyde as a molecule for testing variations of electron-to-proton mass ratio
J. S. Vorotyntseva, S. A. Levshakov, M. G. Kozlov
We present the quantum-mechanical calculations of the dimensionless sensitivity coefficients Q to small changes in the fundamental physical constant mu = m_e/m_p - the electron-to-…
Indications of electron-to-proton mass ratio variations in the Galaxy. II. 3 mm methanol lines toward Sgr B2(N) and (M)
J. S. Vorotyntseva, S. A. Levshakov, C. Henkel
Differential measurements of the fundamental constant mu = m_e/m_p (the electron-to-proton mass ratio) for two sources near the Galactic Center - the Sgr B2(N) and B2(M) molecular…
Indication of the electron-to-proton mass ratio variation within the Galaxy
J. S. Vorotyntseva, S. A. Levshakov
Near (~100 pc) and far (~8.7 kpc) relative to the Galactic center, the molecular clouds SgrB2(N) and Orion-KL exhibit different values of the fundamental physical constant mu=m_e/m…
Spectroscopic Shifts in Deuterated Methanol Induced by Variation of me/mp
J. S. Vorotyntseva, S. A. Levshakov, M. G. Kozlov
Numerical calculations of the sensitivity coefficients, Q_mu, of microwave molecular transitions in the ground torsion-rotation state of deuterated methanol (CH3OD, CD3OH, and CD3O…
Torsion-rotational transitions in methanol as a probe of fundamental physical constants -- electron and proton masses
J. S. Vorotyntseva, S. A. Levshakov
We report on the using of torsion-rotational transitions in the CH3OH and (13)CH3OH molecules to evaluate possible variations of the physical constant mu=m_e/m_p - the electron-to-…