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20022007
most citedComment on "Limits on the Time Variation of the Electromagnetic Fine-Structure Constant in the Low Energy Limit from Absorption Lines in the Spectra of Distant Quasars"

92 citations · 164 across the 3 of their papers we have counts for

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Showing 2002Show all

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astro-ph2002

A 22GHz search for molecular absorption at z~3 with the upgraded ATCA

S. J. Curran, M. T. Murphy, J. K. Webb +1

We report a lambda > 1cm search for rotational molecular absorption towards quasars, now possible with the upgraded Australia Telescope Compact Array (ATCA). The targets were PKS 0…

astro-ph2002

Does the fine structure constant vary? A detailed investigation into systematic effects

M. T. Murphy, J. K. Webb, V. V. Flambaum +1

We have previously presented 5.7-sigma evidence for a smaller alpha at redshifts 0.2 < z_abs < 3.7 from a sample of 128 Keck/HIRES quasar absorption systems: da/a = (-0.57 +/- 0.10…