Papers › A local infall from a cosmographic analysis of Pantheon+

A local infall from a cosmographic analysis of Pantheon+

9 Jul 2024arXiv:2407.07002links table onlyarchive 2025-07-28

Francesco Sorrenti, Ruth Durrer, Martin Kunz

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We present a model independent analysis of the Pantheon+ supernova sample and study the dependence of the recovered values of H₀, q₀ and j₀ on the redshift cut and on the modeling of peculiar velocities. In addition to the bulk velocity discussed previously, we also find a significant infall that we attribute to the presence of an overdensity out to a radius of R≃120h⁻¹Mpc.

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