AMICO galaxy clusters in KiDS-DR3: Measurement of the halo bias and power spectrum normalization from a stacked weak lensing analysis
| Autor: | Lorenzo Ingoglia, Giovanni Covone, Mauro Sereno, Carlo Giocoli, Sandro Bardelli, Fabio Bellagamba, Gianluca Castignani, Samuel Farrens, Hendrik Hildebrandt, Shahab Joudaki, Eric Jullo, Denise Lanzieri, Giorgio F Lesci, Federico Marulli, Matteo Maturi, Lauro Moscardini, Lorenza Nanni, Emanuela Puddu, Mario Radovich, Mauro Roncarelli, Feliciana Sapio, Carlo Schimd |
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| Přispěvatelé: | ITA, GBR, FRA, DEU, CAN, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics - Astrophysics of Galaxies gravitational lensing: weak Space and Planetary Science galaxies: clusters: general Astrophysics of Galaxies (astro-ph.GA) (cosmology:) cosmological parameters [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics::Galaxy Astrophysics catalogues Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, 2022, 511 (1), pp.1484-1501. ⟨10.1093/mnras/stac046⟩ |
| ISSN: | 0035-8711 1365-2966 |
| Popis: | Galaxy clusters are biased tracers of the underlying matter density field. At very large radii beyond about 10 Mpc h−1, the shear profile shows evidence of a second-halo term. This is related to the correlated matter distribution around galaxy clusters and proportional to the so-called halo bias. We present an observational analysis of the halo bias–mass relation based on the AMICO galaxy cluster catalogue, comprising around 7000 candidates detected in the third release of the KiDS survey. We split the cluster sample into 14 redshift-richness bins and derive the halo bias and the virial mass in each bin by means of a stacked weak lensing analysis. The observed halo bias–mass relation and the theoretical predictions based on the Lambda cold dark matter standard cosmological model show an agreement within 2σ. The mean measurements of bias and mass over the full catalogue give $M_{200c} = (4.9 \pm 0.3) \times 10^{13}\, {\rm M}_{\odot }/{\it h}$ and $b_h \sigma _8^2 = 1.2 \pm 0.1$. With the additional prior of a bias–mass relation from numerical simulations, we constrain the normalization of the power spectrum with a fixed matter density Ωm = 0.3, finding σ8 = 0.63 ± 0.10. |
| Databáze: | OpenAIRE |
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