Cosmology and modified gravity with dark sirens from GWTC-3
| Autor: | Mancarella, Michele, Finke, Andreas, Foffa, Stefano, Genoud-Prachex, Edwin, Francesco Iacovelli, Maggiore, Michele |
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| Přispěvatelé: | Augé, E, Dumarchez, J, Trân Thanh Vân, J, Mancarella, M, Finke, A, Foffa, S, Genoud-Prachex, E, Iacovelli, F, Maggiore, M |
| Rok vydání: | 2022 |
| Předmět: |
hubble parameter
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Condensed Matter::Superconductivity FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics General Relativity and Quantum Cosmology (gr-qc) modified gravity General Relativity and Quantum Cosmology Gravitational wave Astrophysics::Galaxy Astrophysics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | INSPIRE-HEP |
| DOI: | 10.48550/arxiv.2203.09238 |
| Popis: | We present the latest measurements of the Hubble parameter and of the parameter $\Xi_0$ describing modified gravitational wave propagation, obtained from the third gravitational wave transient catalog, GWTC-3, using the correlation with galaxy catalogs and information from the source-frame mass distribution of binary black holes. The latter leads to the tightest bound on $\Xi_0$ so far, i.e. $\Xi_0 = 1.2^{+0.7}_{-0.7}$ with a flat prior on $\Xi_0$, and $\Xi_0 = 1.0^{+0.4}_{-0.8}$ with a prior uniform in $\log\Xi_0$ (Max posterior and $68\%$ HDI). The measurement of $H_0$ is dominated by the single bright siren GW170817, resulting in $H_0=67^{+9}_{-6} \, \rm km \, s^{-1} \, Mpc$ when combined with the galaxy catalog. Comment: Contribution to the Gravitation session of the 56th Rencontres de Moriond 2022 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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