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Balashev","submitted_at":"2018-09-04T15:42:52Z","abstract_excerpt":"We present a study of cold gas absorption from a damped Lyman-$\\alpha$ absorber (DLA) at redshift $z_{\\rm abs}=1.946$ towards two lensed images of the quasar J144254.78+405535.5 at redshift $z_{\\rm QSO} = 2.590$. The physical separation of the two lines of sight at the absorber redshift is $d_{\\rm abs}=0.7$~kpc based on our lens model. We observe absorption lines from neutral carbon and H$_2$ along both lines of sight indicating that cold gas is present on scales larger than $d_{\\rm abs}$. 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