67 citations · 270 across the 9 of their papers we have counts for
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Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498
M. Daprà, C. Henkel, S. A. Levshakov +6
The dependence of the proton-to-electron mass ratio, mu, on the local matter density was investigated using methanol emission in the dense dark cloud core L1498. Towards two differ…
Analysis of carbon monoxied absorption at z=2.5 to constrain variation of the proton-to-electron mass ratio
M. Daprà, P. Noterdaeme, M. Vonk +2
Absorption by carbon monoxide in the spectrum of quasar SDSS J000015.16+004833.2 is investigated in order to derive a constraint on the temporal variation of the proton-to-electron…
Constraint on a varying proton-to-electron mass ratio from H2 and HD absorption at z = 2.34
M. Daprà, M. van der Laan, M. T. Murphy +1
Molecular hydrogen absorption in the damped Lyman-alpha system at z = 2.34 towards quasar Q1232+082 is analyzed in order to derive a constraint on a possible temporal variation of…
Constraint on a cosmological variation in the proton-to-electron mass ratio from electronic CO absorption
M. Daprà, M. L. Niu, E. J. Salumbides +2
Carbon monoxide (CO) absorption in the sub-damped Lyman- absorber at redshift , toward the background quasar SDSS J123714.60+064759.5 (J1237+0647), was inve…
Constraint on a varying proton-to-electron mass ratio from molecular hydrogen absorption toward quasar SDSS J123714.60+064759.5
M. Daprà, J. Bagdonaite, M. T. Murphy +1
Molecular hydrogen transitions in the sub-damped Lyman alpha absorber at redshift z = 2.69, toward the background quasar SDSS J123714.60+064759.5, were analyzed in order to search…