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相关论文: A very deep Chandra observation of Abell 1795: The…

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We present the results of interferometric observations of the cool core of Abell 1795 at CO(1-0) using the Combined Array for Research in Millimeter-Wave Astronomy. In agreement with previous work, we detect a significant amount of cold…

高能天体物理现象 · 物理学 2015-06-05 Michael McDonald , Lisa H. Wei , Sylvain Veilleux

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…

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…

宇宙学与河外天体物理 · 物理学 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 report the discovery of a 40 arcsec long X-ray filament in the core of the cluster of galaxies A1795. The feature coincides with an Halpha+NII filament found by Cowie et al in the early 1980s and resolved into at least 2 U-band filaments…

We present the properties of intracluster medium (ICM) in the cool core of the massive cluster of galaxies Abell 1835 obtained with the data by $ Chandra$ $X$-$ray$ $Observatory$. We find distinctive spiral patterns with the radius of 70…

高能天体物理现象 · 物理学 2017-03-08 Shutaro Ueda , Tetsu Kitayama , Tadayasu Dotani

We present X-ray spatial and spectral analysis of the Chandra data from the central 400 kpc (H0 = 50 km/s/Mpc) of the cluster of galaxies Abell 1795. The plasma temperature rises outwards by a factor of 3, whereas the iron abundance…

天体物理学 · 物理学 2008-11-26 S. Ettori , A. C. Fabian , S. W. Allen , R. M. Johnstone

Cold molecular gas is found in several clusters of galaxies (Edge, 2001, Salome' & Combes, 2003): single dish telescope observations in CO(1-0) and CO(2-1) emission lines have revealed the existence of large amounts of cold gas (up to…

天体物理学 · 物理学 2009-11-10 P. Salome , F. Combes

We present the results of a {\it Chandra} observation of the central region of Abell 3112. This cluster has a powerful radio source in the center and was believed to have a strong cooling flow. The X-ray image shows that the intracluster…

天体物理学 · 物理学 2009-11-07 Motokazu Takizawa , Craig L. Sarazin , Elizabeth L. Blanton , Greg B. Taylor

The nearby cluster Abell 1795 is used as a testbed to examine whether hot gas in cluster galaxies is stripped by the ram pressure of the intracluster medium (ICM). The expected X-ray emission in and around Abell 1795 galaxies is likely…

星系天体物理 · 物理学 2018-10-31 Cory R. Wagner , Michael McDonald , Stephane Courteau

The physics of the coolest phases in the hot Intra-Cluster Medium (ICM) of clusters of galaxies is yet to be fully unveiled. X-ray cavities blown by the central Active Galactic Nucleus (AGN) contain enough energy to heat the surrounding gas…

宇宙学与河外天体物理 · 物理学 2011-05-25 J. de Plaa , N. Werner , A. Simionescu , J. S. Kaastra , Y. G. Grange , Jacco Vink

This paper presents properties of the intracluster medium (ICM) in the environment of a cool core cluster Abell 2566 (redshift $z$ = 0.08247) based on the analysis of 20 ks Chandra X-ray data. 2D imaging analysis of the Chandra data from…

高能天体物理现象 · 物理学 2024-06-24 S. K. Kadam , Satish S. Sonkamble , N. D. Vagshette , M. K. Patil

Using the X-ray data from \ASCA, spectral and spatial properties of the intra-cluster medium (ICM) of the cD cluster Abell 1795 are studied, up to a radial distance of $\sim 12'$ ($\sim 1.3$ $h_{50}^{-1}$ kpc). The ICM temperature and…

天体物理学 · 物理学 2009-10-30 H. Xu , K. Makishima , Y. Fukazawa , Y. Ikebe , K. Kikuchi , T. Ohashi , T. Tamura

New Chandra X-ray and Herschel FIR observations enable a multiwavelength study of active galactic nucleus (AGN) heating and intracluster medium (ICM) cooling in the brightest cluster galaxy of Abell 2597. The new Chandra observations reveal…

We present a detailed X-ray study of the intracluster medium (ICM) of the nearby, cool-core galaxy cluster Abell 478, with Chandra and XMM observations. Using a wavelet smoothing hardness analysis, we derive detailed temperature maps of…

天体物理学 · 物理学 2009-11-10 Alastair J. R. Sanderson , Alexis Finoguenov , Joseph J. Mohr

We present a Chandra observation of the cooling flow cluster Abell 262. Spectral fits show that the intracluster medium (ICM) in A262 cools by a factor of three from 2.7 keV to 0.9 keV at the cluster center. A mass deposition rate of Mdot =…

天体物理学 · 物理学 2009-11-10 Elizabeth L. Blanton , Craig L. Sarazin , Brian R. McNamara , T. E. Clarke

We analyze the X-ray and radio properties of the galaxy cluster Abell 2009 (z=0.152) to complete the in-depth study of a subsample of objects from the ROSAT Brightest Cluster Sample with relatively high X-ray flux and H$\alpha$ line…

星系天体物理 · 物理学 2025-03-12 I. Fornasiero , F. Ubertosi , M. Gitti

We present an analysis of the Chandra X-ray observation of Abell 2052, including large scale properties of the cluster as well as the central region which includes the bright radio source, 3C 317. We present temperature and abundance…

天体物理学 · 物理学 2011-07-18 Elizabeth L. Blanton , Craig L. Sarazin , Brian R. McNamara

Thermal gas in the center of galaxy clusters can show substantial motions that generate surface-brightness and temperature discontinuities known as cold fronts. The motions may be triggered by minor or off-axis mergers that preserve the…

We present results from a 38 ks Chandra X-ray observation of the z=0.059 galaxy cluster A1991. The cluster has a bright X-ray core and a central temperature gradient that declines inward from 2.7 keV at 130 kpc to approximately 1.6 keV at…

We present an analysis of Chandra observations of the central regions of the cooling flow cluster Abell 2029. We find a number of X-ray filaments in the central 40 kpc, some of which appear to be associated with the currently active central…

天体物理学 · 物理学 2009-11-10 Tracy E. Clarke , Elizabeth L. Blanton , Craig L. Sarazin
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