A local infall from a cosmographic analysis of Pantheon+
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917856302596096 |
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| author | Sorrenti, Francesco Durrer, Ruth Kunz, Martin |
| author_facet | Sorrenti, Francesco Durrer, Ruth Kunz, Martin |
| contents | 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 $R\simeq 120h^{-1}$Mpc. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_07002 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A local infall from a cosmographic analysis of Pantheon+ Sorrenti, Francesco Durrer, Ruth Kunz, Martin Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology 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 $R\simeq 120h^{-1}$Mpc. |
| title | A local infall from a cosmographic analysis of Pantheon+ |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2407.07002 |