中文
相关论文

相关论文: Observing galaxy clusters and the cosmic web throu…

200 篇论文

In a search for evidence of the short wavelength increment in the Sunyaev-Zel'dovich (SZ) effect, we have analyzed archival galaxy cluster data from the Sub-millimetre Common User Bolometer Array (SCUBA) on the James Clerk Maxwell…

天体物理学 · 物理学 2008-11-26 M. Zemcov , C. Borys , M. Halpern , P. Mauskopf , D. Scott

We determine the distances to 18 galaxy clusters with redshifts ranging from z~0.14 to z~0.78 from a maximum likelihood joint analysis of 30 GHz interferometric Sunyaev-Zel'dovich effect (SZE) and X-ray observations. We model the…

天体物理学 · 物理学 2010-04-06 E. D. Reese , J. E. Carlstrom , M. Joy , J. J. Mohr , L. Grego , W. L. Holzapfel

We report on mapping observations toward the region of the most luminous X-ray cluster RXJ1347-1145 (z=0.45) through the Sunyaev-Zel'dovich effect at 21GHz and 150GHz with the Nobeyama 45-m telescope. While a low angular resolution image at…

We discuss the consequences of the spectral and morphological modification of galaxy cluster radio halos due to the Sunyaev-Zeldovich (SZ) effect for the interpretation of existing and upcoming high frequency radio observations. Likely…

天体物理学 · 物理学 2009-11-07 Torsten A. Ensslin

Future multifrequency microwave background experiments with arcminute resolution and micro-Kelvin temperature sensitivity will be able to detect the kinetic Sunyaev-Zeldovich (kSZ) effect, providing a way to measure radial peculiar…

天体物理学 · 物理学 2008-11-26 Suman Bhattacharya , Arthur Kosowsky

Sunyaev Zel'dovich cluster surveys can be used to constrain cosmological parameters. Extracting clusters from the primary anisotropies and the unresolved background from very faint clusters is simple when the telescope beam size is small (1…

天体物理学 · 物理学 2007-05-23 Richard A. Battye , Jochen Weller

The Ryle Telescope has been used to provide images at 15 GHz of the Sunyaev-Zel'dovich decrements towards a dozen clusters in an X-ray luminosity-limited sample. So far, X-ray data have allowed H_0 estimates towards two of these, both…

天体物理学 · 物理学 2007-05-23 Richard Saunders

I review the present observational status of the SZ effect due to the Compton scattering of the 3K background on the hot electrons of clusters of galaxies. I raise the relevant issues from theoretical and X-ray aspects of the question that…

天体物理学 · 物理学 2007-05-23 F. -Xavier Desert

The thermal Sunyaev-Zel'dovich (tSZ) effect is the inverse-Compton scattering of cosmic microwave background (CMB) photons off hot, ionized electrons, primarily located in galaxy groups and clusters. Recent years have seen immense…

宇宙学与河外天体物理 · 物理学 2015-10-22 J. Colin Hill

The cosmic microwave background radiation (CMBR) is providing important clues into the evolution of the early universe. In this Science Perspective, Joy and Carlstrom discuss one feature of the CMBR, the Sunyaev-Zel'dovich effect, which can…

天体物理学 · 物理学 2007-05-23 Marshall Joy , John E. Carlstrom

We present a Hubble Space Telescope (HST) weak gravitational lensing study of nine distant and massive galaxy clusters with redshifts $1.0 \lesssim z \lesssim 1.7$ ($z_\mathrm{median} = 1.4$) and Sunyaev Zel'dovich (SZ) detection…

We present a detailed investigation of issues related to the measurement of peculiar velocities and temperatures using Sunyaev-Zel'dovich (SZ) effects. We estimate the accuracy to which peculiar velocities and gas temperatures of distant…

天体物理学 · 物理学 2009-11-07 Gilbert P. Holder

By using exclusively the Sunyaev-Zel'dovich effect and X-ray surface brightness data from 25 galaxy clusters in the redshift range 0.023< z < 0.784 we access cosmic acceleration employing a kinematic description. Such result is fully…

宇宙学与河外天体物理 · 物理学 2016-11-15 R. F. L. Holanda , J. A. S. Lima , J. V. Cunha

In this work we calculate the Sunyaev-Zel'dovich (SZ) effect due to the $e^+e^-$ from dark matter (DM) annihilation in galaxy clusters. Two candidates of DM particle, (1) the weakly-interacting massive particle (WIMP) and (2) the light dark…

宇宙学与河外天体物理 · 物理学 2014-11-18 Qiang Yuan , Xiaojun Bi , Feng Huang , Xuelei Chen

The thermal Sunyaev-Zeldovich (SZ) effect and the X-ray emission offer separate and highly complementary probes of the thermodynamics of the intracluster medium, particularly on their radial dependence. We already released \texttt{JoXSZ},…

宇宙学与河外天体物理 · 物理学 2022-02-09 Fabio Castagna , Stefano Andreon , Alberto Trombetta , Marco Landoni

We introduce the Marenostrum-MultiDark SImulations of galaxy Clusters (MUSIC) Dataset, one of the largest sample of hydrodynamically simulated galaxy clusters with more than 500 clusters and 2000 groups. The objects have been selected from…

宇宙学与河外天体物理 · 物理学 2015-06-05 Federico Sembolini , Gustavo Yepes , Marco De Petris , Stefan Gottloeber , Luca Lamagna , Barbara Comis

The Sunyaev-Zel'dovich (SZ) effect has long been identified as one of the most important secondary effects of the Cosmic Microwave Background (CMB). On the one hand, it is a potentially very powerful cosmological probe providing us with…

宇宙学与河外天体物理 · 物理学 2015-05-13 N. Taburet , M. Douspis , N. Aghanim

As the quality of the available galaxy cluster data improves, the models fitted to these data might be expected to become increasingly complex. Here we present the Bayesian approach to the problem of cluster data modelling: starting from…

天体物理学 · 物理学 2009-11-10 P. J. Marshall , M. P. Hobson , A. Slosar

The Sunyaev-Zeldovich (SZ) effect is a promising tool to study physical properties of the hot X-ray emitting intracluster medium (ICM) in galaxy clusters. To date, most SZ observations have been interpreted in combination with X-ray…

宇宙学与河外天体物理 · 物理学 2015-06-12 Andrea Morandi , Daisuke Nagai , Wei Cui