Results 41 to 50 of about 135 (130)

THE EVOLUTION OF THE INTRACLUSTER MEDIUM METALLICITY IN SUNYAEV ZEL’DOVICH-SELECTED GALAXY CLUSTERS AT 0 < z < 1.5 [PDF]

open access: yesThe Astrophysical Journal, 2016
ABSTRACT We present the results of an X-ray spectral analysis of 153 galaxy clusters observed with the Chandra, XMM-Newton, and Suzaku space telescopes. These clusters, which span 0 < z < 1.5, were drawn from a larger, mass-selected sample of galaxy clusters discovered in the 2500 square degree South Pole Telescope Sunyaev Zel ...
M. McDonald   +18 more
openaire   +5 more sources

INTRACLUSTER MEDIUM ENTROPY PROFILES FOR A CHANDRA ARCHIVAL SAMPLE OF GALAXY CLUSTERS

open access: yesThe Astrophysical Journal Supplement Series, 2009
We present radial entropy profiles of the intracluster medium (ICM) for a collection of 239 clusters taken from the Chandra X-ray Observatory's Data Archive. Entropy is of great interest because it controls ICM global properties and records the thermal history of a cluster.
Voit, G.   +3 more
openaire   +2 more sources

ADAPTIVELY REFINED LARGE EDDY SIMULATIONS OF A GALAXY CLUSTER: TURBULENCE MODELING AND THE PHYSICS OF THE INTRACLUSTER MEDIUM [PDF]

open access: yesThe Astrophysical Journal, 2009
We present a numerical scheme for modeling unresolved turbulence in cosmological adaptive mesh refinement codes. As a first application, we study the evolution of turbulence in the intracluster medium (ICM) and in the core of a galaxy cluster. Simulations with and without subgrid scale (SGS) model are compared in detail.
Maier, Armin   +3 more
openaire   +2 more sources

Iron abundances and heating of the intracluster medium in hydrodynamical simulations of galaxy clusters [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2003
Results from a large set of hydrodynamical smoothed particle hydrodynamics (SPH) simulations of galaxy clusters in a flat ΛCDM cosmology are used to investigate the metal enrichment and heating of the intracluster medium (ICM). The physical modelling of the gas includes radiative cooling, star formation, energy feedback and metal enrichment which ...
openaire   +1 more source

Effects of Ram Pressure from the Intracluster Medium on the Star Formation Rate of Disk Galaxies in Clusters of Galaxies

open access: yesThe Astrophysical Journal, 1999
19 pages, 9 figures, to appear in ...
Fujita, Yutaka, Nagashima, Masahiro
openaire   +2 more sources

Star-formation efficiency and metal enrichment of the intracluster medium in local massive clusters of galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2011
We have investigated the baryon-mass content in a subsample of 19 clusters of galaxies extracted from the X-ray flux-limited sample HIFLUGCS according to their positions in the sky. For these clusters, we measured total masses and characteristic radii on the basis of a rich optical spectroscopic data set, the physical properties of the intracluster ...
Zhang, Y.   +5 more
openaire   +3 more sources

SDSS-C4 3028: the Nearest Blue Galaxy Cluster Devoid of an Intracluster Medium

open access: yesThe Open Journal of Astrophysics
SDSS-C4 3028 is a galaxy cluster at z = 0.061 , notable for its unusually high fraction of star-forming galaxies with 19 star-forming and 11 quiescent ...
Shweta Jain   +11 more
openaire   +2 more sources

Measuring the intracluster medium velocity structure within the A3266 galaxy cluster

open access: yesAstronomy & Astrophysics
We present a detailed analysis of the velocity structure of the hot intracluster medium (ICM) within the A3266 galaxy cluster, including new observations taken between June and November 2023. Firstly, morphological structures within the galaxy cluster were examined using a Gaussian gradient magnitude (GGM) and an adaptively smoothed GGM filter applied ...
E. Gatuzz   +9 more
openaire   +2 more sources

Cosmic evolution of the Faraday rotation measure in the intracluster medium of galaxy clusters

open access: yesAstronomy & Astrophysics
Context. Radio observations have revealed magnetic fields in the intracluster medium (ICM) of galaxy clusters, and their energy density is nearly in equipartition with the turbulent kinetic energy. This suggests magnetic field amplification by dynamo processes during cluster formation.
Y. Rappaz   +4 more
openaire   +2 more sources

Ram‐Pressure Stripping of Galaxies in High‐Redshift Clusters and the Influence of Intracluster Medium Heating [PDF]

open access: yesThe Astrophysical Journal, 2001
We have investigated the ram-pressure stripping of disk galaxies in clusters at various redshifts and in cluster progenitors; the clusters grow up on a hierarchical clustering scenario. We consider a radially infalling galaxy whose initial position and velocity are given by a spherical collapse model of structure formation. Moreover, since observations
openaire   +1 more source

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