SEARCH FOR TIME VARIATION OF THE FINE STRUCTURE CONSTANT

@article{Webb1999SEARCHFT,
  title={SEARCH FOR TIME VARIATION OF THE FINE STRUCTURE CONSTANT},
  author={John K Webb and Victor V. Flambaum and Christopher W. Churchill and Michael J Drinkwater and John D. Barrow},
  journal={Physical Review Letters},
  year={1999},
  volume={82},
  pages={884-887}
}
An order of magnitude sensitivity gain is described for using quasar spectra to investigate possible time or space variation in the fine structure constant $\ensuremath{\alpha}$. Applied to a sample of 30 absorption systems, spanning redshifts $0.5lzl1.6$, we derive limits on variations in $\ensuremath{\alpha}$ over a wide range of epochs. For the whole sample, $\ensuremath{\Delta}\ensuremath{\alpha}/\ensuremath{\alpha}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}(\ensuremath{-}1.1… Expand

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