J 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

Odkazy

Impakt faktor

Impact factor: 4.800

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/22:00119596

Organizační jednotka

Přírodovědecká fakulta

EID Scopus

Klíčová slova anglicky

cosmological parameters; cosmology: observations; dark matter; distance scale; galaxies: clusters: general; X-rays: galaxies: clusters

Štítky

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
Název: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě (Akronym: EHU)
Investor: Grantová agentura ČR, Exploring the Hot Universe and Understanding Comic Feedback
MUNI/I/0003/2020, interní kód MU
Název: MUNI Award in Science and Humanities 3 (Akronym: Space-Based High-Energy Astrophysics)
Investor: Masarykova univerzita, MUNI Award in Science and Humanities 3, MASH - MUNI Award in Science and Humanities