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An antihalo void catalogue of the Local Super-Volume
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).ORCID iD: 0000-0001-8620-4079
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). University of Cambridge, UK.ORCID iD: 0000-0002-2519-584x
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).ORCID iD: 0000-0002-4677-5843
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Number of Authors: 52024 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 531, no 2, p. 2213-2222Article in journal (Refereed) Published
Abstract [en]

We construct an antihalo void catalogue of 150 voids with radii 𝑅>10ℎ−1Mpc in the Local Super-Volume (⁠<135ℎ−1Mpc from the Milky Way), using posterior resimulation of initial conditions inferred by field-level inference with Bayesian Origin Reconstruction from Galaxies (BORG). We describe and make use of a new algorithm for creating a single, unified void catalogue by combining different samples from the posterior. The catalogue is complete out to 135ℎ−1Mpc⁠, with void abundances matching theoretical predictions. Finally, we compute stacked density profiles of those voids which are reliably identified across posterior samples, and show that these are compatible with Λ cold dark matter expectations once environmental selection (e.g. the estimated ∼4 per cent underdensity of the Local Super-Volume) is accounted for.

Place, publisher, year, edition, pages
2024. Vol. 531, no 2, p. 2213-2222
Keywords [en]
methods: data analysis, large-scale structure of Universe, cosmology: theory
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-231522DOI: 10.1093/mnras/stae1251ISI: 001234646900004Scopus ID: 2-s2.0-85194935886OAI: oai:DiVA.org:su-231522DiVA, id: diva2:1885984
Available from: 2024-07-29 Created: 2024-07-29 Last updated: 2024-07-29Bibliographically approved

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Stopyra, StephenPeiris, Hiranya V.Jasche, Jens

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