ABSTRACT We present updated cosmological constraints from measurements of the gas mass fractions (fgas) 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 ≳ 1, and significantly longer observations of four clusters at 0.6 < z < 0.9. Our low-redshift (z < 0.16) fgas 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 fgas data set with priors on the cosmic baryon density and the Hubble constant, we constrain the dark energy density to be Ω...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
Using the data comprising measurements of the gas mass fraction fgas for 42 hot and dynamically rela...
We present a study of the baryonic fraction in galaxy clusters aimed at constraining the cosmologica...
This is the second in a series of papers studying the astrophysics and cosmology of massive, dynamic...
We present a study of the baryonic fraction in galaxy clusters aimed at constraining the cosmologic...
We present a study of the baryonic fraction in galaxy clusters aimed at constraining the cosmologic...
We use data on massive galaxy clusters (M cluster>8×1014 h −1 M ⊙ within a comoving radius of R clus...
Current efforts in observational cosmology are focused on characterizing the mass-energy content of ...
Context. We present the analysis of the baryonic content of 52 X-ray luminous galaxy clusters obser...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
Current efforts in observational cosmology are focused on characterizing the mass-energy content of ...
The ratio of baryonic to dark matter densities is assumed to have remained constant throughout the f...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
Using the data comprising measurements of the gas mass fraction fgas for 42 hot and dynamically rela...
We present a study of the baryonic fraction in galaxy clusters aimed at constraining the cosmologica...
This is the second in a series of papers studying the astrophysics and cosmology of massive, dynamic...
We present a study of the baryonic fraction in galaxy clusters aimed at constraining the cosmologic...
We present a study of the baryonic fraction in galaxy clusters aimed at constraining the cosmologic...
We use data on massive galaxy clusters (M cluster>8×1014 h −1 M ⊙ within a comoving radius of R clus...
Current efforts in observational cosmology are focused on characterizing the mass-energy content of ...
Context. We present the analysis of the baryonic content of 52 X-ray luminous galaxy clusters obser...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
Current efforts in observational cosmology are focused on characterizing the mass-energy content of ...
The ratio of baryonic to dark matter densities is assumed to have remained constant throughout the f...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
International audienceCurrent efforts in observational cosmology are focused on characterizing the m...
Using the data comprising measurements of the gas mass fraction fgas for 42 hot and dynamically rela...