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We discuss two themes from Chandra observations of galaxies and clusters. First, we describe the effects of radio-emitting plasmas or ``bubbles'', inflated by active galactic nuclei, on the hot X-ray emitting gaseous atmospheres in galaxies…

Astrophysics · Physics 2007-05-23 W. Forman , M. Markevitch , C. Jones , A. Vikhlinin , E. Churazov

We present Chandra and radio observations, and analysis of Sloan Digital Sky Survey data, of the radio galaxy B2 0838+32A (4C 32.26) and its environment. The radio galaxy is at the centre of a nearby group that has often been identified…

Astrophysics · Physics 2009-11-13 Nazirah N. Jetha , Martin J. Hardcastle , Trevor J. Ponman , Irini Sakelliou

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

The total mass derived from X-ray emission is biased low in a large number of clusters when compared with the mass estimated via strong and weak lensing. Suzaku and Chandra observations out to the virial radius report in several relaxed…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 R. Fusco-Femiano , A. Lapi

We present results from the Chandra X-ray observation of Abell 13, a galaxy cluster that contains an unusual noncentral radio source, also known as a radio relic. This is the first pointed X-ray observation of Abell 13, providing a more…

We present VLA radio and Chandra X-ray observations of the merging galaxy cluster Abell 3411. For the cluster, we find an overall temperature of 6.4 keV and an X-ray luminosity of 2.8 x 10^{44} erg s^{-1} between 0.5 and 2.0 keV. The…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-23 R. J. van Weeren , K. Fogarty , C. Jones , W. R. Forman , T. E. Clarke , M. Bruggen , R. P. Kraft , D. V. Lal , S. S. Murray , H. J. A. Rottgering

The mechanisms giving rise to diffuse radio emission in galaxy clusters, and in particular their connection with cluster mergers, are still debated. We aim to obtain new insights into the internal dynamics of the cluster Abell 2294,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 M. Girardi , W. Boschin , R. Barrena

Abell~1142 is a low-mass galaxy cluster at low redshift containing two comparable Brightest Cluster Galaxies (BCG) resembling a scaled-down version of the Coma Cluster. Our Chandra analysis reveals an X-ray emission peak, roughly 100 kpc…

High Energy Astrophysical Phenomena · Physics 2016-04-20 Yuanyuan Su , David A. Buote , Fabio Gastaldello , Reinout van Weeren

We analyze our new 144 ks deep Chandra observation of the sloshing cold front cluster RXJ2014.8-2430. Previous observations of RXJ2014.8-2430 with XMM-Newton shows evidence of a large scale, sloshing cold front around 800 kpc away from the…

High Energy Astrophysical Phenomena · Physics 2026-05-04 M. J. Sundquist , S. A. Walker , M. S. Mirakhor

We present a detailed Chandra, XMM-Newton, VLA and HST analysis of one of the strongest cool core clusters known, RX J1532.9+3021 (z=0.3613). Using new, deep 90 ks Chandra observations, we confirm the presence of a western X-ray cavity or…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 J. Hlavacek-Larrondo , S. W. Allen , G. B. Taylor , A. C. Fabian , R. E. A. Canning , N. Werner , J. S. Sanders , C. K. Grimes , S. Ehlert , A. von der Linden

We report the Chandra detection of X-ray emission spatially coincident with the kpc-scale radio bubbles in the nearby (D_L ~ 31 Mpc) AGN-starburst galaxy NGC 6764. The X-ray emission originates in hot gas (kT ~ 0.75 keV), which may either…

Astrophysics · Physics 2009-11-13 J. H. Croston , M. J. Hardcastle , P. Kharb , R. P. Kraft , A. Hota

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 here our results on a complete sample of Brightest Cluster Galaxies (BCGs) in nearby Abell Clusters (distance class <3). Combined with data from the literature, we provide parsec scale information for 34 BCGs. We found that also…

Cosmology and Nongalactic Astrophysics · Physics 2011-03-03 E. Liuzzo , G. Giovannini , M. Giroletti

(abridged) We present a detailed reanalysis of the Chandra data for the galaxy cluster Abell 4059 and its central radio galaxy, PKS2354-35. We also present new 1.4GHz and 4.7GHz CnB-array radio data from the Very Large Array (VLA), as well…

We present the results of a Chandra study of the Hydra A galaxy cluster, where a powerful AGN outburst created a large-scale cocoon shock. We investigated possible azimuthal variations in shock strength and shape, finding indications for a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Myriam Gitti , Paul E. J. Nulsen , Laurence P. David , Brian R. McNamara , Michael W. Wise

This paper presents a sample of "cold front" clusters selected from the Chandra archive. The clusters are selected based purely on the existence of surface brightness edges in their Chandra images which are modeled as density jumps. A…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Matt S. Owers , Paul E. J. Nulsen , Warrick J. Couch , Maxim Markevitch

By analysing the Chandra and XMM-Newton archived data of the nearby galaxy cluster Abell 3158, which was reported to possess a relatively regular, relaxed morphology in the X-ray band in previous works, we identify a bow edge-shaped…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Yu Wang , Haiguang Xu , Liyi Gu , Junhua Gu , Zhenzhen Qin , Jingying Wang , Zhongli Zhang , Xiang-Ping Wu

We present deep Chandra observations of the pre-merger galaxy cluster Abell 98. Abell 98 is a complex merging system. While the northern (A98N) and central subclusters (A98S) are merging along the north-south direction, A98S is undergoing a…

We present a detailed analysis of the thermal X-ray emission from the intracluster medium (ICM) in the cool-core galaxy cluster Abell 2667 ($z=0.23$). Our goal is to detect low-temperature ($<2$ keV) X-ray emitting gas, potentially…

Cosmology and Nongalactic Astrophysics · Physics 2025-02-12 M. Lepore , C. Pinto , P. Tozzi , M. Gaspari , F. Gastaldello , A. Liu , P. Rosati , R. van Weeren , G. Cresci , E. Iani , G. Rodighiero

We present a new analysis of very deep Chandra observations of the galaxy cluster Abell 1795. Utilizing nearly 750 ks of net ACIS imaging, we are able to resolve the thermodynamic structure of the Intracluster Medium (ICM) on length scales…

Astrophysics of Galaxies · Physics 2015-06-22 S. Ehlert , M. McDonald , E. D. Miller , L. P. David , M. W. Bautz
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