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Related papers: Measuring the ICM velocity structure within the A3…

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Exploring the ICM power spectrum can help us to probe the physics of galaxy clusters. Using high-resolution 3D plasma simulations, we study the statistics of the velocity field and its relation with the thermodynamic perturbations. The…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 M. Gaspari , E. Churazov , D. Nagai , E. T. Lau , I. Zhuravleva

We report 102 new redshifts and magnitudes for a sample of galaxies to RF ~ 15.5 mag in a 2.17 deg x 2.17 deg region centered on the galaxy IC 4296, the most luminous member of the A3565 cluster. Up to the limiting magnitude we find 29…

We measure the intracluster medium temperature distributions for 62 galaxy clusters in the HIFLUGCS, an X-ray flux-limited sample, with available X-ray data from XMM-Newton. We search for correlations between the width of the temperature…

Cosmology and Nongalactic Astrophysics · Physics 2013-01-28 K. A. Frank , J. R. Peterson , K. Andersson , A. C. Fabian , J. S. Sanders

We present a systematic analysis of the intracluster medium (ICM) in an X-ray flux limited sample of 45 galaxy clusters. Using archival ROSAT PSPC data and published ICM temperatures, we present best fit double and single beta model…

Astrophysics · Physics 2008-11-26 Joe Mohr , Ben Mathiesen , Gus Evrard

X-ray observations of galaxy clusters potentially provide powerful cosmological probes if systematics due to our incomplete knowledge of the intracluster medium (ICM) physics are understood and controlled. In this paper, we present mock…

Astrophysics · Physics 2008-11-26 Daisuke Nagai , Alexey Vikhlinin , Andrey V. Kravtsov

Analysis of a 30,000 s X-ray observation of the Abell 3266 galaxy cluster with the ACIS on board the Chandra Observatory has produced several new insights into the cluster merger. The intracluster medium has a non-monotonically decreasing…

Astrophysics · Physics 2009-11-07 Mark J. Henriksen , Eric R. Tittley

We present the discovery of a large-scale structure of emission-line galaxies at redshift z=4.86 behind a massive cluster of galaxies, A1689. Previous spectroscopic observations of a galaxy, A1689-7.1 at z=4.87, near this structure,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Y. Matsuda , J. Richard , Ian Smail , N. Kashikawa , K. Shimasaku , B. L. Frye , T. Yamada , Y. Nakamura , T. Hayashino , T. Fujii

We demonstrate a novel technique for calibrating the energy scale of the XMM EPIC-pn detector, which allows us to measure bulk flows in the intracluster medium (ICM) of the Perseus and Coma clusters. The procedure uses the instrumental…

Cosmology and Nongalactic Astrophysics · Physics 2020-01-15 J. S. Sanders , K. Dennerl , H. R. Russell , D. Eckert , C. Pinto , A. C. Fabian , S. A. Walker , T. Tamura , J. ZuHone , F. Hofmann

The impact of viscosity in the Intracluster Medium (ICM) is still an open question in astrophysics. To address this problem, we have run a set of cosmological simulations of three galaxy clusters with a mass larger than $M_{\mathrm{Vir}} >…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-14 Tirso Marin-Gilabert , Ulrich P. Steinwandel , Milena Valentini , David Vallés-Pérez , Klaus Dolag

Galaxy clusters, the largest gravitationally bound structures in the Universe, contain vast amounts of dark matter, galaxies, and hot ionised gas known as the intracluster medium (ICM). In relaxed cluster cores, the ICM appears to cool…

High Energy Astrophysical Phenomena · Physics 2025-08-26 XRISM collaboration

The recent detection of Doppler shifts of X-ray spectral lines in the intracluster gas of the Centaurus and Perseus clusters of galaxies with ASCA has raised the question of the frequency of such velocity gradients and their relation to…

Astrophysics · Physics 2009-11-11 Renato A. Dupke , Joel N. Bregman

The cloud-scale density, velocity dispersion, and gravitational boundedness of the interstellar medium (ISM) vary within and among galaxies. In turbulent models, these properties play key roles in the ability of gas to form stars. New high…

We perform three dimensional hydrodynamical simulations of a moving substructure in a cluster of galaxies. We investigate dynamical evolution of the intracluster medium (ICM) in and around the substructure moving radially in the larger…

Astrophysics · Physics 2016-08-30 Motokazu Takizawa

We search for global rotation of the intracluster medium (ICM) in the galaxy cluster Abell 2107, where previous studies have detected rotational motion in the member galaxies with a high significance level. By fitting the centroid of the…

Astrophysics of Galaxies · Physics 2019-03-20 Ang Liu , Paolo Tozzi

Several recent numerical simulations of off-center cluster mergers predict that significant angular momentum with associated velocities of a few x 10^{3} km/s can be imparted to the resulting cluster. Such gas bulk velocities can be…

Astrophysics · Physics 2009-11-06 Renato A. Dupke , Joel N. Bregman

We present ASCA gas temperature maps of the nearby merging galaxy clusters Cygnus A, A3667, and A2065. Cygnus A appears to have a particularly simple merger geometry that allows an estimate of the subcluster collision velocity from the…

Astrophysics · Physics 2009-10-31 M. Markevitch , C. L. Sarazin , A. Vikhlinin

Located at z = 0.203, A2163 is a rich galaxy cluster with an intra-cluster medium (ICM) that exhibits extraordinary properties, including an exceptionally high X-ray luminosity, average temperature, and a powerful and extended radio halo.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 H. Bourdin , M. Arnaud , P. Mazzotta , G. W. Pratt , J. -L. Sauvageot , R. Martino , S. Maurogordato , A. Cappi , C. Ferrari , C. Benoist

We present a multiwavelength study of the massive galaxy cluster Abell 1763 at redshift z = 0.231. Image analysis of a 19.6 ks Chandra archival observation reveals a cluster-wide spiral of enhanced surface brightness in the intracluster…

High Energy Astrophysical Phenomena · Physics 2018-12-07 E. M. Douglass , E. L. Blanton , S. W. Randall , T. E. Clarke , L. O. V. Edwards , Z. Sabry , J. A. ZuHone

We propose a strategy to search for bulk motions in the intracluster medium (ICM) of merging clusters based on {\sl Chandra} CCD data. Our goal is to derive robust measurements of the average redshift of projected ICM regions obtained from…

Cosmology and Nongalactic Astrophysics · Physics 2015-08-21 Ang Liu , Heng Yu , Paolo Tozzi , Zong-Hong Zhu