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.
Authors
- M. Kunz
- Francesco Sorrenti (ORCID: https://orcid.org/0000-0001-7141-9659)
- Ruth Durrer (ORCID: https://orcid.org/0000-0001-9833-2086)
Institutions
- University of Geneva (CH)
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