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Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes
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SYSNO ASEP 0545247 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes Author(s) Martinelli, M. (ES)
Martins, C.J.A.P. (PT)
Nesseris, S. (PT)
Ilić, Stephane (FZU-D) ORCIDNumber of authors 85 Article number A80 Source Title Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 644, Dec (2020)Number of pages 13 s. Language eng - English Country FR - France Keywords cosmology: observations ; cosmological parameters / surveys ; methods: data analysis ; methods: statistical ; space vehicles: instruments Subject RIV BE - Theoretical Physics OECD category Particles and field physics Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000596874300007 EID SCOPUS 85097344897 DOI 10.1051/0004-6361/202039078 Annotation Context. In metric theories of gravity with photon number conservation, the luminosity and angular diameter distances are related via the Etherington relation, also known as the distance duality relation (DDR). A violation of this relation would rule out the standard cosmological paradigm and point to the presence of new physics.Aims. We quantify the ability of Euclid, in combination with contemporary surveys, to improve the current constraints on deviations from the DDR in the redshift range 0 < z < 1.6.Methods. We start with an analysis of the latest available data, improving previously reported constraints by a factor of 2.5. We then present a detailed analysis of simulated Euclid and external data products, using both standard parametric methods (relying on phenomenological descriptions of possible DDR violations) and a machine learning reconstruction using genetic algorithms.Results. We find that for parametric methods Euclid can (in combination with external probes) improve current constraints by approximately a factor of six, while for non-parametric methods
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1051/0004-6361/202039078
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