2022
Cosmological constraints from gas mass fractions of massive, relaxed galaxy clusters
MANTZ, Adam B.; R. Glenn MORRIS; Steven W. ALLEN; Rebecca E. A. CANNING; Lucie BAUMONT et al.Základní údaje
Originální název
Cosmological constraints from gas mass fractions of massive, relaxed galaxy clusters
Autoři
MANTZ, Adam B.; R. Glenn MORRIS; Steven W. ALLEN; Rebecca E. A. CANNING; Lucie BAUMONT; Bradford BENSON; Lindsey E. BLEEM; Steven R. EHLERT; Benjamin FLOYD; Ricardo HERBONNET; Patrick L. KELLY; Shuang LIANG; Anja VON DER LINDEN; Michael MCDONALD; David A. RAPETTI; Robert W. SCHMIDT; Norbert WERNER a Adam WRIGHT
Vydání
Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2022, 0035-8711
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10308 Astronomy
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 4.800
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/22:00119596
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
cosmological parameters; cosmology: observations; dark matter; distance scale; galaxies: clusters: general; X-rays: galaxies: clusters
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 11. 2022 11:08, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
We present updated cosmological constraints from measurements of the gas mass fractions (f(gas)) of massive, dynamically relaxed galaxy clusters. Our new data set has greater leverage on models of dark energy, thanks to the addition of the Perseus cluster at low redshifts, two new clusters at redshifts z greater than or similar to 1, and significantly longer observations of four clusters at 0.6 < z < 0.9. Our low-redshift (z < 0.16) f(gas) data, combined with the cosmic baryon fraction measured from the cosmic microwave background (CMB), imply a Hubble constant of h = 0.722 +/- 0.067. Combining the full f(gas) data set with priors on the cosmic baryon density and the Hubble constant, we constrain the dark energy density to be Omega(Lambda) = 0.865 +/- 0.119 in non-flat Lambda cold dark matter (cosmological constant) models, and its equation of state to be in flat, constant-w models, respectively 41percent and 29percent tighter than our previous work, and comparable to the best constraints available from other probes. Combining f(gas), CMB, supernova, and baryon acoustic oscillation data, we also constrain models with global curvature and evolving dark energy. For the massive, relaxed clusters employed here, we find the scaling of f(gas) with mass to be consistent with a constant, with an intrinsic scatter that corresponds to just similar to 3percent in distance.
Návaznosti
| GX21-13491X, projekt VaV |
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| MUNI/I/0003/2020, interní kód MU |
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