English
Related papers

Related papers: Weighing the Giants V: Galaxy Cluster Scaling Rela…

200 papers

The main uncertainty in current determinations of the power spectrum normalization, sigma_8, from abundances of X-ray luminous galaxy clusters arises from the calibration of the mass-temperature relation. We use our weak lensing mass…

Astrophysics · Physics 2009-11-11 Kristian Pedersen , Haakon Dahle

This is the fourth in a series of papers studying the astrophysics and cosmology of massive, dynamically relaxed galaxy clusters. Here, we use measurements of weak gravitational lensing from the Weighing the Giants project to calibrate…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-17 D. E. Applegate , A. Mantz , S. W. Allen , A. von der Linden , R. G. Morris , S. Hilbert , P. L. Kelly , D. L. Burke , H. Ebeling , D. A. Rapetti , R. W. Schmidt

Combining conservation of energy throughout nearly-spherical collapse of galaxy clusters with the virial theorem, we derive the mass-temperature relation for X-ray clusters of galaxies $T=CM^{2/3}$. The normalization factor $C$ and the…

Astrophysics · Physics 2009-08-29 Niayesh Afshordi , Renyue Cen

We model the effects of shocks on the diffuse, X-ray emitting baryons in clusters of galaxies. Shocks separate the infalling from the inner gas nearly at equilibrium, and dominate the compression and the density gradients of the latter in…

Astrophysics · Physics 2009-10-30 A. Cavaliere , N. Menci , P. Tozzi

We investigate the evolution of clusters of galaxies in a sample of distant clusters with redshifts between 0.3 and 1.0. We show the abilities and limitations of combined ROSAT and ASCA data to draw cosmological conclusions. For the first…

Astrophysics · Physics 2007-05-23 Sabine Schindler

We study a sample of 19 galaxy clusters in the redshift range $0.15<z<0.30$ with highly complete spectroscopic membership catalogues (to $K < K^{\ast}(\rm z)+1.5$) from the Arizona Cluster Redshift Survey (ACReS); individual weak-lensing…

Cosmology and Nongalactic Astrophysics · Physics 2017-10-11 Sarah L. Mulroy , Sean L. McGee , Steven Gillman , Graham P. Smith , Chris P. Haines , Jessica Democles , Nobuhiro Okabe , Eiichi Egami

We investigate the cosmological dependence and the constraining power of large-scale galaxy correlations, including all redshift-distortions, wide-angle, lensing and gravitational potential effects on linear scales. We analyze the…

Cosmology and Nongalactic Astrophysics · Physics 2016-05-25 Alvise Raccanelli , Francesco Montanari , Daniele Bertacca , Olivier Doré , Ruth Durrer

In this paper we re-visit the observational relation between X-ray luminosity and temperature for high-z galaxy clusters and compare it with the local L_X-T and with theoretical models. To these ends we use a sample of 17 clusters extracted…

Astrophysics · Physics 2009-11-13 M. Branchesi , I. M. Gioia , C. Fanti , R. Fanti

We provide a new scaling relation between $Y_{\text{SZ}}$, the integrated Sunyaev-Zeldovich signal and $M_{500}^{Y_{\text{X}}}$, the cluster mass derived from X-ray observations, using a sample of clusters from the Planck Early…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-16 G. Aymerich , M. Douspis , G. W. Pratt , L. Salvati , E. Soubrié , F. Andrade-Santos , W. Forman , C. Jones , N. Aghanim , R. Kraft , R. J. van Weeren

The failure of purely gravitational models of X-ray cluster formation to reproduce basic observed properties of the local cluster population suggests the need for one or more additional physical processes operating on the intracluster…

Astrophysics · Physics 2009-10-31 John J. Bialek , August E. Evrard , Joseph J. Mohr

The abundance of galaxy clusters is in principle a powerful tool to constrain cosmological parameters, especially $\Omega_\mathrm{m}$ and $\sigma_8$, due to the exponential dependence in the high-mass regime. While the best observables are…

Cosmology and Nongalactic Astrophysics · Physics 2015-10-23 Christian Angrick , Francesco Pace , Matthias Bartelmann , Mauro Roncarelli

We use Chandra observations of nine optically and X-ray selected clusters in five different structures at z ~ 0.7-1.1 from the Observations of Redshift Evolution in Large-Scale Environments (ORELSE) survey to study diffuse X-ray emission…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Nick Rumbaugh , Dale D. Kocevski , Roy R. Gal , Brian C. Lemaux , Lori M. Lubin , Chris D. Fassnacht , Gordon K. Squires

We aim to quantify the capability of the inhomogeneous distribution of galaxy clusters, represented by the two-point statistics in Fourier space, to retrieve information on the underlying scaling relations. We make a case study using the…

Cosmology and Nongalactic Astrophysics · Physics 2014-02-06 Andrés Balaguera-Antolínez

Galaxy clusters are a recent cosmological probe. The precision and accuracy of the cosmological parameters inferred from these objects are affected by the knowledge of cluster physics, entering the analysis through the mass-observable…

Cosmology and Nongalactic Astrophysics · Physics 2020-10-28 Laura Salvati , Marian Douspis , Nabila Aghanim

This paper, the third in a series, investigates the scaling relations between optical richness, weak-lensing mass, and Compton $Y$ for a sample of galaxy clusters selected purely by the effect of their gravitational potential on the shapes…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-13 S. Andreon , M. Radovich

We present measurements of the X-ray observables of the intra-cluster medium (ICM), including luminosity $L_X$, ICM mass $M_{ICM}$, emission-weighted mean temperature $T_X$, and integrated pressure $Y_X$, that are derived from XMM-Newton…

We present the first weak-lensing-based scaling relation between galaxy cluster mass, M_wl, and integrated Compton parameter Y_sph. Observations of 18 galaxy clusters at z~0.2 were obtained with the Subaru 8.2-m telescope and the…

We have performed cosmological simulations in a $\Lambda$CDM cosmology with and without radiative cooling, in order to study the effect of cooling on the cluster scaling relations. Our simulations consist of 4.1 million particles each of…

Astrophysics · Physics 2009-11-06 O. Muanwong , P. A. Thomas , S. T. Kay , F. R. Pearce , H. M. P. Couchman

We demonstrate that optical data from SDSS, X-ray data from ROSAT and Chandra, and SZ data from Planck, can be modeled in a fully self-consistent manner. After accounting for systematic errors and allowing for property covariance, we find…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Eduardo Rozo , James G. Bartlett , August E. Evrard , Eli S. Rykoff

We constrain the mass--richness scaling relation of redMaPPer galaxy clusters identified in the Dark Energy Survey Year 1 data using weak gravitational lensing. We split clusters into $4\times3$ bins of richness $\lambda$ and redshift $z$…

‹ Prev 1 4 5 6 7 8 10 Next ›