Počet záznamů: 1
Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes
- 1.
SYSNO ASEP 0545247 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Euclid: Forecast constraints on the cosmic distance duality relation with complementary external probes Tvůrce(i) Martinelli, M. (ES)
Martins, C.J.A.P. (PT)
Nesseris, S. (PT)
Ilić, Stephane (FZU-D) ORCIDCelkový počet autorů 85 Číslo článku A80 Zdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 644, Dec (2020)Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova cosmology: observations ; cosmological parameters / surveys ; methods: data analysis ; methods: statistical ; space vehicles: instruments Vědní obor RIV BE - Teoretická fyzika Obor OECD Particles and field physics Způsob publikování Omezený přístup Institucionální podpora FZU-D - RVO:68378271 UT WOS 000596874300007 EID SCOPUS 85097344897 DOI 10.1051/0004-6361/202039078 Anotace 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
Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2022 Elektronická adresa https://doi.org/10.1051/0004-6361/202039078
Počet záznamů: 1