Precision cosmology with cosmic voids

Abstract : Cosmic voids, the emptiest regions of the universe are a promising tool to constrain cosmological models. In this paper I introduce the use of voids for cosmology and focus on one of the main systematic effects undermining the optimal extraction of cosmological information from the under-dense regions: peculiar velocities. I present guidelines reduce the impact of peculiar velocities by performing optimal cuts on void catalogues. Additionally I discuss the considerable increase in void statistics to be expected from future surveys and present an estimate of the number of voids to be obtained from two upcoming surveys: the ESA-lead Euclid survey and the NASA-lead WFIRST mission.
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Communication dans un congrès
14th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories, Jul 2015, Rome, Italy. 3, pp.2317-2322, 2017, 〈10.1142/9789813226609_0268〉
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https://hal.archives-ouvertes.fr/hal-01669853
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Soumis le : jeudi 21 décembre 2017 - 01:10:54
Dernière modification le : mardi 29 mai 2018 - 12:50:22

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Alice Pisani. Precision cosmology with cosmic voids. 14th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories, Jul 2015, Rome, Italy. 3, pp.2317-2322, 2017, 〈10.1142/9789813226609_0268〉. 〈hal-01669853〉

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