English
Related papers

Related papers: The merging cluster Abell 1758 revisited: multi-wa…

200 papers

Abell 2744, also known as Pandora's Cluster, is a complex merging galaxy cluster. While a major merger is clear along the north-south axis, the dynamical state of the northwest subcluster has been highly uncertain. We present ultra-deep…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-04 Urmila Chadayammuri , Ákos Bogdán , Gerrit Schellenberger , John ZuHone

We present the results of a detailed analysis of the XMM-Newton observation of the galaxy cluster Abell 3921. The X-ray morphology of the cluster is elliptical, with the centroid offset from the brightest cluster galaxy by 17 arcsec, and…

Astrophysics · Physics 2009-11-10 E. Belsole , J-L. Sauvageot , G. W. Pratt , H. Bourdin

We present a mosaic of five XMM-Newton observations of the nearby ($z=0.0594$) merging galaxy cluster Abell 3266. We use the spectro-imaging capabilities of \xmm to build precise (projected) temperature, entropy, pressure and Fe abundance…

Astrophysics · Physics 2009-11-11 Jean-Luc Sauvageot , Elena Belsole , Gabriel W. Pratt

Here we present the weak lensing results of A1758, which is known to consist of four subclusters undergoing two separate mergers, A1758N and A1758S. Weak lensing results of A1758N agree with previous weak lensing results of clusters…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Brett Ragozzine , Douglas Clowe , Maxim Markevitch , Anthony H. Gonzalez , Marusa Bradac

We present a detailed study of the X-ray properties of the galaxy cluster Abell 548b (z=0.04), using XMM-Newton data, and discuss the connection between the thermal properties and the presence of two extended relic radio sources located at…

Abell 1689 is a galaxy cluster at $z=0.183$ where previous measurements of its mass using various techniques gave discrepant results. We present a new detailed measurement of the mass with the data based on X-ray observations with the…

Astrophysics · Physics 2009-11-10 K. E. Andersson , G. M. Madejski

We present a detailed strong lensing, weak lensing and X-ray analysis of Abell 2744 (z = 0.308), one of the most actively merging galaxy clusters known. It appears to have unleashed `dark', `ghost', `bullet' and `stripped' substructures,…

We investigate the star formation rate and its location in the major merger cluster Abell 2465 at $z$ = 0.245. Optical properties of the cluster are described in Paper I. Measurements of the H$\alpha$ and infrared dust emission of galaxies…

Astrophysics of Galaxies · Physics 2015-06-23 Gary A. Wegner , Devin S. Chu , Ho Seong Hwang

Combining XMM-Newton and Chandra data, we have performed a detailed study of Abell 3558. Our analysis shows that its dynamical history is more complicated than previously thought. We have found some traits typical of cool core clusters…

Astrophysics · Physics 2009-11-11 M. Rossetti , S. Ghizzardi , S. Molendi , A. Finoguenov

We present deep XMM-Newton, Karl Jansky Very Large Array, and upgraded Giant Metrewave Radio Telescope observations of Abell 746, a cluster that hosts a plethora of diffuse emission sources that provide evidence for the acceleration of…

We present new redshift measurements for 55 galaxies in the vicinity of the rich galaxy cluster Abell 665. When combined with results from the literature, we have good velocity measurements for a sample of 77 confirmed cluster members from…

Astrophysics · Physics 2009-10-31 Percy L. Gomez , John P. Hughes , Mark Birkinshaw

We present the results of deep Chandra, XMM-Newton and Suzaku observations of the nearby galaxy cluster Abell 85, which is currently undergoing at least two mergers, and in addition shows evidence for gas sloshing which extends out to r ~…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Y. Ichinohe , N. Werner , A. Simionescu , S. W. Allen , R. E. A. Canning , S. Ehlert , F. Mernier , T. Takahashi

New Chandra X-ray data and extensive optical spectroscopy, obtained with AAOmega on the 3.9 m Anglo-Australian Telescope, are used to study the complex merger taking place in the galaxy cluster Abell 2744. Combining our spectra with data…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Matt S. Owers , Scott W. Randall , Paul E. J. Nulsen , Warrick J. Couch , Laurence P. David , Joshua C. Kempner

Deep VLA 1.4 GHz radio continuum imaging of Abell 2255 is presented. This cluster is among the better nearby candidates for rich cluster-cluster merger systems, with evidence including an elongated X-ray morphology, the presence of a radio…

Astrophysics · Physics 2009-11-07 Neal Miller , Frazer Owen

We present the results of deep Chandra and XMM-Newton X-ray imaging and spatially-resolved spectroscopy of Abell 2256, a nearby (z=0.058) galaxy cluster experiencing multiple mergers and displaying a rich radio morphology dominated by a…

High Energy Astrophysical Phenomena · Physics 2020-06-10 J. P. Breuer , N. Werner , F. Mernier , T. Mroczkowski , A. Simionescu , T. E. Clarke , J. A. ZuHone , L. Di Mascolo

The Abell 780 cluster, better known as the Hydra A cluster, has been thouroughly analyzed in X-rays. However, little is known on its optical properties. We derive the galaxy luminosity function (GLF) in this apparently relaxed cluster, and…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 F. Durret , E. Slezak , C. Adami

Abell 3266 is one of the X-ray brightest galaxy clusters in the sky and is a well-known merging system. Using the ability of the eROSITA telescope onboard SRG (Spectrum R\"ontgen Gamma) to observe a wide field with a single pointing, we…

Observed galaxy clusters often exhibit X-ray morphologies suggestive of recent interaction with an infalling subcluster. Abell 3376 is a nearby (z=0.046) massive galaxy cluster whose bullet-shaped X-ray emission indicates that it may have…

Cosmology and Nongalactic Astrophysics · Physics 2013-11-19 Rubens E. G. Machado , Gastão B. Lima Neto

We present results from an X-ray and radio study of the merging galaxy cluster Abell 115. We use the full set of 5 Chandra observations taken of A115 to date (360 ks total integration) to construct high-fidelity temperature and surface…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-06 Eric J. Hallman , Brian Alden , David Rapetti , Abhirup Datta , Jack O. Burns

We present a dynamical analysis of the central ~1.3 square degrees of the cluster of galaxies Abell 1367, based on 273 redshift measurements (of which 119 are news). From the analysis of the 146 confirmed cluster members we derive a…

Astrophysics · Physics 2009-11-10 L. Cortese , G. Gavazzi , A. Boselli , J. Iglesias-Paramo , L. Carrasco