Results 41 to 50 of about 138 (130)
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT Well-resolved galaxy clusters often show a large-scale quasi-spiral structure in deprojected density ρ and temperature T fields, delineated by a tangential discontinuity known as a cold front, superimposed on a universal radial entropy profile with a linear K(r) ∝ Tρ−2/3 ∝ r adiabat.
Uri Keshet, Itay Raveh, Arka Ghosh
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INTRACLUSTER MEDIUM ENTROPY PROFILES FOR A CHANDRA ARCHIVAL SAMPLE OF GALAXY CLUSTERS
The 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
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Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Using high-resolution hydrodynamical simulations of idealized galaxy clusters, we study the interaction between the brightest cluster galaxy, its supermassive black hole (BH), and the intracluster medium (ICM). We create initial conditions for which the ICM is in hydrostatic equilibrium within the gravitational potential from ...
Folkert S J Nobels +4 more
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GALAXY CLUSTERS IN THESWIFT/BURST ALERT TELESCOPE ERA: HARD X-RAYS IN THE INTRACLUSTER MEDIUM [PDF]
The Astrophysical Journal, 2008 We report the detection of 10 clusters of galaxies in the ongoing Swift/Burst Alert Telescope (BAT) all-sky survey. This sample, which mostly comprises merging clusters, was serendipitously detected in the 15-55 keV band. We use the BAT sample to investigate the presence of excess hard X-rays above the thermal emission.
Ajello, M. +8 more
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ADAPTIVELY REFINED LARGE EDDY SIMULATIONS OF A GALAXY CLUSTER: TURBULENCE MODELING AND THE PHYSICS OF THE INTRACLUSTER MEDIUM [PDF]
The 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
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Iron abundances and heating of the intracluster medium in hydrodynamical simulations of galaxy clusters [PDF]
Monthly 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 ...
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The Astrophysical Journal, 1999 19 pages, 9 figures, to appear in ...
Fujita, Yutaka, Nagashima, Masahiro
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The three-dimensional shapes of the galaxy cluster intracluster medium in eRASS1
Astronomy & AstrophysicsAims. The three-dimensional shapes of clusters are important for understanding the astrophysics of the clusters and as a probe in cosmological studies. Methods.
S. Kulkarni +4 more
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SDSS-C4 3028: the Nearest Blue Galaxy Cluster Devoid of an Intracluster Medium
The Open Journal of AstrophysicsSDSS-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
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Measuring the intracluster medium velocity structure within the A3266 galaxy cluster
Astronomy & AstrophysicsWe 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
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