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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

Context: Chandra observations of the Abell 3411-3412 merging system have revealed an outbound bullet-like sub-cluster in the northern part and many surface brightness (SB) edges at the southern periphery, where multiple diffuse sources are…

High Energy Astrophysical Phenomena · Physics 2020-10-14 X. Zhang , A. Simionescu , H. Akamatsu , J. S. Kaastra , J. de Plaa , R. J. van Weeren

We report Suzaku observations of the galaxy cluster Abell 1795 that extend to r_200 ~ 2 Mpc, the radius within which the mean cluster mass density is 200 times the cosmic critical density. These observations are the first to probe the state…

Abell 754, a cluster undergoing merging, was observed in hard X-rays with the Rossi X-ray Timing Explorer (RXTE) in order to constrain its hottest temperature component and search for evidence of nonthermal emission. Simultaneous modeling…

Astrophysics · Physics 2009-10-31 A. Valinia , M. J. Henriksen , M. Loewenstein , K. Roettiger , R. F. Mushotzky , G. Madejski

We present the results from the analysis of long Suzaku observations of the most X-ray luminous galaxy cluster RX J1347.5-1145 at z=0.451. Aims: We study physical properties of the hot (~20 keV) gas clump in the south-east (SE) region…

Astrophysics · Physics 2009-11-13 N. Ota , K. Murase , T. Kitayama , E. Komatsu , M. Hattori , H. Matsuo , T. Oshima , Y. Suto , K. Yoshikawa

We have analyzed spatially resolved spectra of A754 obtained with ASCA. The combination of spectral and imaging capabilities of ASCA has set unprecedented constraints on the hydrodynamical effects of a cluster merger. We find significant…

Astrophysics · Physics 2009-10-28 Mark Henriksen , Maxim Markevitch

We present analysis results for a nearby galaxy cluster Abell 1631 at $z~=~0.046$ using the X-ray observatory Suzaku. This cluster is categorized as a low X-ray surface brightness cluster. To study the dynamical state of the cluster, we…

High Energy Astrophysical Phenomena · Physics 2018-04-25 Yasunori Babazaki , Ikuyuki Mitsuishi , Naomi Ota , Shin Sasaki , Hans Boehringer , Gayoung Chon , Gabriel W. Pratt , Hironori Matsumoto

We study the temperature structure of the rich cluster of galaxies Abell 1367 using two independent methods of correcting for the ASCA PSF. The results of the two methods are in excellent agreement and give solid evidence of a strong and…

Astrophysics · Physics 2007-05-23 R. Hank Donnelly , M. Markevitch , W. Forman , C. Jones , L. P. David , E. Churazov , M. Gilfanov

We present an analysis of a Chandra observation of Abell 2034. The cluster has multiple signatures of an ongoing merger, including a cold front and probable significant heating of the intracluster medium above its equilibrium temperature.…

Astrophysics · Physics 2009-11-07 J. C. Kempner , C. L. Sarazin , M. Markevitch

We present high-resolution X-ray spectroscopy of the merging cluster Abell~754 using \textit{XRISM}/Resolve. In GO1 phase, \textit{XRISM}/Resolve observed Abell 754 in two deep pointings, targeting the eastern primary core (114~ks) and the…

Astrophysics of Galaxies · Physics 2025-11-26 Yuki Omiya , Nobuhiro Okabe , Kazuhiro Nakazawa , Naomi Ota , Yuto Ichinohe , Shutaro Ueda , Nhan T. Nguyen-dang

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

Our XMM-Newton observations of Abell 85 confirm the extended 4 Mpc filament first detected with ROSAT, which has an X-ray temperature of about 2 keV and is probably made of groups falling on to the cluster. A comparison of the temperature…

Astrophysics · Physics 2009-11-10 Florence Durret , Gastao B. Lima Neto , William Forman

We present results from a large mosaic of Suzaku observations of the Coma Cluster, the nearest and X-ray brightest hot, dynamically active, non-cool core system, focusing on the thermodynamic properties of the ICM on large scales. For…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 A. Simionescu , N. Werner , O. Urban , S. W. Allen , A. C. Fabian , A. Mantz , K. Matsushita , P. E. J. Nulsen , J. S. Sanders , T. Sasaki , T. Sato , Y. Takei , S. A. Walker

The nearby ($z=0.03015$) cluster of galaxies Abell~2199 was observed by Suzaku in X-rays, with five pointings for $\sim 20$ ks each. From the XIS data, the temperature and metal abundance profiles were derived out to $\sim 700$ kpc (0.4…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Madoka Kawaharada , Kazuo Makishima , Takao Kitaguchi , Sho Okuyama , Kazuhiro Nakazawa , Yasushi Fukazawa

We report the observation of the Intra-Cluster Medium (ICM) of Abell 85 by the X-ray satellite BeppoSAX. We have both analysed the spectrum obtained in the central 8 arcmin circular region centred on the Very Steep Spectrum Radio Source…

Astrophysics · Physics 2009-11-06 G. B. Lima Neto , V. Pislar , J. Bagchi

We carried out 3 observations of the cluster of galaxies AWM 7, for the central region and 20'-east and 20'-west offset regions, with Suzaku. Temperature and abundance profiles are measured out to 27'~ 570 /h_70 kpc, which corresponded to…

We carried out observations of the central and 20' east offset regions of the cluster of galaxies Abell 1060 with Suzaku. Spatially resolved X-ray spectral analysis has revealed temperature and abundance profiles of Abell 1060 out to 27' ~…

We present deep ($205 \rm ks$), \Chandra observations of the \ab295 binary merging cluster ($z=0.30$). In the X-ray image, the secondary component is clearly visible as a surface brightness peak, while the primary cluster has a flatter…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-03 Aurelia Pascut , John P. Hughes

Based on a detailed analysis of the high-quality Chandra, XMM-Newton, and Suzaku data of the X-ray bright cluster of galaxies Abell 1795, we report clear evidence for a two-phase intracluster medium (ICM) structure, which consists of a cool…

High Energy Astrophysical Phenomena · Physics 2015-06-04 Liyi Gu , Haiguang Xu , Junhua Gu , Madoka Kawaharada , Kazuhiro Nakazawa , Zhenzhen Qin , Jingying Wang , Yu Wang , Zhongli Zhang , Kazuo Makishima

The results from Suzaku XIS observations of the relaxed cluster of galaxies Abell2052 are presented. Offset pointing data are used to estimate the Galactic foreground emission in the direction to the cluster. Significant soft X-ray excess…