English
Related papers

Related papers: SPT-CL J0417-4748: A Deep Chandra Study of a Relax…

200 papers

We present a multi-wavelength analysis of the galaxy cluster SPT-CL J0607-4448 (SPT0607), which is one of the most distant clusters discovered by the South Pole Telescope (SPT) at $z=1.4010\pm0.0028$. The high-redshift cluster shows clear…

Galaxy clusters serve as a unique and valuable laboratory for probing cosmological models and understanding astrophysics at the high-mass limit of structure formation. Clusters that are dynamically relaxed are especially useful targets of…

Galaxy clusters trace the densest regions of the cosmic web and are crucial laboratories for studying the thermodynamic and chemical evolution of the intracluster medium (ICM). We present a Chandra study of the massive galaxy cluster SPT-CL…

Astrophysics of Galaxies · Physics 2026-01-14 Dan Hu , Shida Fan , Zhongsheng Yuan , Junjie Mao , Norbert Werner , Yuanyuan Su , François Mernier , Yuanyuan Zhao , Liyi Gu , Haiguang Xu

We present the discovery of the most distant, dynamically relaxed cool core cluster, SPT-CL J2215-3537 (SPT2215) and its central brightest cluster galaxy (BCG) at z=1.16. Using new X-ray observations, we demonstrate that SPT2215 harbors a…

We present a multi-wavelength analysis of the four most relaxed clusters in the South Pole Telescope 2500 deg^2 survey, which lie at 0.55 < z < 0.75. This study, which utilizes new, deep data from Chandra and Hubble, along with ground-based…

We present imaging and spectroscopic analyses of Chandra and XMM-Newton observations of ACT-CL J0123.5$-$0428, one of the most massive, highest redshift galaxy clusters detected within the survey fields of the Atacama Cosmology Telescope.…

In the cores of some galaxy clusters the hot intracluster plasma is dense enough that it should cool radiatively in the cluster's lifetime, leading to continuous "cooling flows" of gas sinking towards the cluster center, yet no such cooling…

We present the results of a joint analysis of $Chandra$ X-ray and South Pole Telescope (SPT) SZ observations targeting the first sample of galaxy clusters at $0.3 < z < 1.3$, selected to be the progenitors of well-studied nearby clusters…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-29 F. Ruppin , M. McDonald , L. E. Bleem , S. W. Allen , B. A. Benson , M. Calzadilla , G. Khullar , B. Floyd

We report the analysis of the Chandra observation of XDCP J0044.0-2033, a massive, distant (z=1.579) galaxy cluster discovered in the XDCP survey. The total exposure time of 380 ks with Chandra ACIS-S provides the deepest X-ray observation…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-23 P. Tozzi , J. S. Santos , M. J. Jee , R. Fassbender , P. Rosati , A. Nastasi , W. Forman , B. Sartoris , S. Borgani , H. Boehringer , B. Altieri , G. W. Pratt , M. Nonino , C. Jones

We present a detailed spectral and spatial analysis of the galaxy cluster PKS 0745-191, using recent observations from the Chandra X-ray Observatory. The data provide information on the temperature and metallicity of the intracluster…

Astrophysics · Physics 2016-08-30 Amalia K. Hicks , Michael W. Wise , John C. Houck , Claude R. Canizares

We jointly analyze Bolocam Sunyaev-Zeldovich (SZ) effect and Chandra X-ray data for a set of 45 clusters to derive gas density and temperature profiles without using spectroscopic information. The sample spans the mass and redshift range $3…

A CHANDRA follow-up observation of an X-ray luminous galaxy cluster with a compact appearance, RXCJ1504.1-0248 discovered in our REFLEX Cluster Survey, reveals an object with one of the most prominent cluster cooling cores. With a core…

Astrophysics · Physics 2009-11-13 H. Boehringer , V. Burwitz , Y. -Y. Zhang , P. Schuecker , N. Nowak

We present Chandra X-ray Observatory observations of the core of the galaxy cluster PKS 0745-191. Its centre shows X-ray cavities caused by AGN feedback and cold fronts with an associated spiral structure. The cavity energetics imply they…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-22 J. S. Sanders , A. C. Fabian , J. Hlavacek-Larrondo , H. R. Russell , G. B. Taylor , F. Hofmann , G. Tremblay , S. A. Walker

We present an analysis of a Chandra ACIS-I observation of the massive galaxy cluster A644. This cluster was previously classified as a cooling flow, but no radio emission has been detected from its cD galaxy. Outside the core (R ~75 kpc…

Astrophysics · Physics 2009-11-11 David A. Buote , Philip J. Humphrey , John T. Stocke

Non-thermal emission from clusters of galaxies at the high-energy X-ray regime has been searched with various instruments, but the detection significance of this emission has yet been found to be either marginal or controversial. Taking…

High Energy Astrophysical Phenomena · Physics 2022-09-14 M. S. Mirakhor , S. A. Walker , J. Runge , P. Diwanji

In this work, we present a high spatial resolution study of a fossil cluster, SDSS J0150-1005 ($z \simeq 0.364$), based on the imaging spectroscopic analysis of \chandra\ observation. The \chandra\ X-ray image shows a relax and symmetric…

Astrophysics of Galaxies · Physics 2015-06-16 Zhenzhen Qin , Haiguang Xu , Jingying Wang , Junhua Gu

Using the deepest (370 ksec) Chandra observation of a high-redshift galaxy cluster, we perform a detailed characterization of the intra-cluster medium (ICM) of WARPJ1415.1+3612 at z=1.03. We also explore the connection between the ICM core…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Joana S. Santos , Paolo Tozzi , Piero Rosati , Mario Nonino , Gabriele Giovannini

We analyse Chandra X-ray Observatory observations of a set of galaxy clusters selected by the South Pole Telescope using a new publicly-available forward-modelling projection code, MBProj2, assuming hydrostatic equilibrium. By fitting a…

Cosmology and Nongalactic Astrophysics · Physics 2017-12-20 J. S. Sanders , A. C. Fabian , H. R. Russell , S. A. Walker

We present a multi-wavelength study of the brightest cluster galaxies (BCGs) in a sample of the 95 most massive galaxy clusters selected from South Pole Telescope (SPT) Sunyaev-Zeldovich (SZ) survey. Our sample spans a redshift range of 0.3…

We present multi-wavelength observations of the centre of RXCJ1504.1-0248 - the galaxy cluster with the most luminous and relatively nearby cool core at z~0.2. Although there are several galaxies within 100 kpc of the cluster core, only the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 G. A. Ogrean , N. A. Hatch , A. Simionescu , H. Böhringer , M. Brüggen , A. C. Fabian , N. Werner
‹ Prev 1 2 3 10 Next ›