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2019

Is the Hubble diagram of quasars in tension with concordance cosmology?

Velten, Hermano, Gomes, Syrios

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Recently Risaliti \& Lusso [Nature Astron.

3 (2019) 3 272] reported new measurements of the expansion rate of the Universe by constructing the Hubble diagram of 1598 quasars in the redshift range $0.5<z<5.5$.
It is claimed a $4\sigma$ tension with the standard concordance $\Lambda$CDM concerning both the fractionary matter density $\Omega_{m0}$ and the dark energy equation of state parameter $w_{de}$ standard values.
In this work we promote an independent analysis of the same data set using a model-independent estimator for cosmic acceleration.

Is the Hubble diagram of quasars in tension with concordance cosmology? · Around

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