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19962026
most citedH0LiCOW XIII. A 2.4% measurement of from lensed quasars: tension between early and late-Universe probes

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astro-ph1998★ 56 cited

High resolution optical and near-IR imaging of the quadruple quasar RX J0911.4+0551

I. Burud, F. Courbin, C. Lidman +10

We report the detection of four images in the recently discovered lensed QSO RX J0911.4+0551. With a maximum angular separation of 3.1", it is the quadruply imaged QSO with the wid…