A local infall from a cosmographic analysis of Pantheon+

Abstract We present a model independent analysis of the Pantheon+ supernova sample and study the dependence of the recovered values of H 0 , q 0 and j 0 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 ≃ 120 h -1 Mpc.

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Publication Details

Journal
Journal of Cosmology and Astroparticle Physics
Published
2024-12-01
DOI
https://doi.org/10.1088/1475-7516/2024/12/003
Citations
8
Primary Topic
Historical and Architectural Studies
Type
article
Field-Weighted Citation Impact
23.39
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article

A local infall from a cosmographic analysis of Pantheon+

M. Kunz, Francesco Sorrenti, Ruth Durrer
8 citations
Journal of Cosmology and Astroparticle Physics
Historical and Architectural Studies
23.39
article

A local infall from a cosmographic analysis of Pantheon+

M. Kunz, Francesco Sorrenti, Ruth Durrer
article en
8 citations

Abstract

Abstract We present a model independent analysis of the Pantheon+ supernova sample and study the dependence of the recovered values of H 0 , q 0 and j 0 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 ≃ 120 h -1 Mpc.

Journal of Cosmology and Astroparticle PhysicsVol. 2024(12)
University of Geneva (CH)
Openalex Percentile: Top 1%
Historical and Architectural Studies
23.39
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