164 citations · 1.1k across the 35 of their papers we have counts for
Showing 2015 · astro-ph.COShow all
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astro-ph.CO2015★ 29 cited
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…
astro-ph.CO2015★ 39 cited
A constraint on a varying proton--electron mass ratio 1.5 billion years after the Big Bang
J. Bagdonaite, W. Ubachs, M. T. Murphy +1
A molecular hydrogen absorber at a lookback time of 12.4 billion years, corresponding to 10 of the age of the universe today, is analyzed to put a constraint on a varying proto…