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In the context of cold dark matter (CDM) cosmological models, we have simulated images of the brightness temperature fluctuations in the cosmic microwave background (CMB)sky owing to the Sunyaev Zel$^{\prime}$dovich (S-Z) effect in a…

天体物理学 · 物理学 2009-10-31 Subhabrata Majumdar , Ravi Subrahmanyan

We have detected the Sunyaev-Zel'dovich (SZ) increment at 850 microns in two galaxy clusters (Cl 0016+16 and MS 1054.4-0321) using SCUBA (Sub-millimetre Common User Bolometer Array) on the James Clerk Maxwell Telescope. Fits to the…

We consider the prospects for measuring the pairwise kinetic Sunyaev-Zel'dovich (kSZ) signal from galaxy clusters discovered in large photometric surveys such as the Dark Energy Survey (DES). We project that the DES cluster sample will, in…

宇宙学与河外天体物理 · 物理学 2015-06-12 Ryan Keisler , Fabian Schmidt

This Letter explores influences of intracluster magnetic fields ($\gsim 1\mu$G) submerged in the hot electron gas on classic Sunyaev-Zel'dovich effect (SZE) and thermal bremsstrahlung in X-ray emissions. As the Larmor frequency is much…

天体物理学 · 物理学 2009-11-10 Jian Hu , Yu-Qing Lou

We discuss how future cluster surveys can constrain cosmological parameters with particular reference to the properties of the dark energy component responsible for the observed acceleration of the universe by probing the evolution of the…

天体物理学 · 物理学 2009-11-07 Richard A. Battye , Jochen Weller

X-ray observations of an "entropy floor" in nearby groups and clusters of galaxies offer evidence that important non-gravitational processes, such as radiative cooling and/or "preheating", have strongly influenced the evolution of the…

天体物理学 · 物理学 2009-11-07 Ian G. McCarthy , Arif Babul , Gilbert P. Holder , Michael L. Balogh

We present a stacked lensing analysis of 96 galaxy clusters selected by the thermal Sunyaev-Zel'dovich (SZ) effect in maps of the cosmic microwave background (CMB). We select foreground galaxy clusters with a $5\sigma$-level SZ threshold in…

The complete characterization of the pressure profile of high-redshift galaxy clusters, from their core to their outskirts, is a major issue for the study of the formation of large-scale structures. It is essential to constrain a potential…

We investigate how strongly and at what scales the Sunyaev- Zel'dovich effect reflects the shifting balance between the two processes that compete for governing the density and the thermodynamic state of the hot intra-cluster medium…

天体物理学 · 物理学 2009-11-06 A. Cavaliere , N. Menci

All-sky data from the Planck survey and the Meta-Catalogue of X-ray detected Clusters of galaxies (MCXC) are combined to investigate the relationship between the thermal Sunyaev-Zeldovich (SZ) signal and X-ray luminosity. The sample…

宇宙学与河外天体物理 · 物理学 2016-08-14 Planck Collaboration , N. Aghanim , M. Arnaud , M. Ashdown , J. Aumont , C. Baccigalupi , A. Balbi , A. J. Banday , R. B. Barreiro , M. Bartelmann , J. G. Bartlett , E. Battaner , K. Benabed , A. Benoît , J. -P. Bernard , M. Bersanelli , R. Bhatia , J. J. Bock , A. Bonaldi , J. R. Bond , J. Borrill , F. R. Bouchet , M. L. Brown , M. Bucher , C. Burigana , P. Cabella , J. -F. Cardoso , A. Catalano , L. Cayón , A. Challinor , A. Chamballu , R. -R. Chary , L. -Y Chiang , C. Chiang , G. Chon , P. R. Christensen , E. Churazov , D. L. Clements , S. Colafrancesco , S. Colombi , F. Couchot , A. Coulais , B. P. Crill , F. Cuttaia , A. Da Silva , H. Dahle , L. Danese , P. de Bernardis , G. de Gasperis , A. de Rosa , G. de Zotti , J. Delabrouille , J. -M. Delouis , F. -X. Désert , J. M. Diego , K. Dolag , S. Donzelli , O. Doré , U. Dörl , M. Douspis , X. Dupac , G. Efstathiou , T. A. Enßlin , F. Finelli , I. Flores , O. Forni , M. Frailis , E. Franceschi , S. Fromenteau , S. Galeotta , K. Ganga , R. T. Génova-Santos , M. Giard , G. Giardino , Y. Giraud-Héraud , J. González-Nuevo , K. M. Górski , S. Gratton , A. Gregorio , A. Gruppuso , D. Harrison , S. Henrot-Versillé , C. Hernández-Monteagudo , D. Herranz , S. R. Hildebrandt , E. Hivon , M. Hobson , W. A. Holmes , W. Hovest , R. J. Hoyland , K. M. Huffenberger , A. H. Jaffe , W. C. Jones , M. Juvela , E. Keihänen , R. Keskitalo , T. S. Kisner , R. Kneissl , L. Knox , H. Kurki-Suonio , G. Lagache , J. -M. Lamarre , A. Lasenby , R. J. Laureijs , C. R. Lawrence , S. Leach , R. Leonardi , M. Linden-Vørnle , M. López-Caniego , P. M. Lubin , J. F. Macías-Pérez , C. J. MacTavish , B. Maffei , D. Maino , N. Mandolesi , R. Mann , M. Maris , F. Marleau , E. Martínez-González , S. Masi , S. Matarrese , F. Matthai , P. Mazzotta , A. Melchiorri , J. -B. Melin , L. Mendes , A. Mennella , S. Mitra , M. -A. Miville-Deschênes , A. Moneti , L. Montier , G. Morgante , D. Mortlock , D. Munshi , A. Murphy , P. Naselsky , P. Natoli , C. B. Netterfield , H. U. Nørgaard-Nielsen , F. Noviello , D. Novikov , I. Novikov , S. Osborne , F. Pajot , F. Pasian , G. Patanchon , O. Perdereau , L. Perotto , F. Perrotta , F. Piacentini , M. Piat , E. Pierpaoli , R. Piffaretti , S. Plaszczynski , E. Pointecouteau , G. Polenta , N. Ponthieu , T. Poutanen , G. W. Pratt , G. Prézeau , S. Prunet , J. -L. Puget , R. Rebolo , M. Reinecke , C. Renault , S. Ricciardi , T. Riller , I. Ristorcelli , G. Rocha , C. Rosset , J. A. Rubiño-Martín , B. Rusholme , M. Sandri , D. Santos , B. M. Schaefer , D. Scott , M. D. Seiffert , G. F. Smoot , J. -L. Starck , F. Stivoli , V. Stolyarov , R. Sunyaev , J. -F. Sygnet , J. A. Tauber , L. Terenzi , L. Toffolatti , M. Tomasi , M. Tristram , J. Tuovinen , L. Valenziano , L. Vibert , P. Vielva , F. Villa , N. Vittorio , B. D. Wandelt , S. D. M. White , M. White , D. Yvon , A. Zacchei , A. Zonca

We discuss a new method of finding the cluster temperatures which is independent of distance and therefore very useful for distant clusters. The hot gas of electrons in clusters of galaxies scatters and distorts the cosmic microwave…

天体物理学 · 物理学 2009-11-07 Steen H. Hansen , Sergio Pastor , Dmitry V. Semikoz

Recently, Jones et al. (1997) used the Ryle telescope, operating at a frequency of 15 GHz, to detect a flux decrement in the direction of the quasar pair PC1643+461A,B. They interpreted this signal as the Sunyaev-Zel'dovich effect (SZE)…

天体物理学 · 物理学 2015-06-24 W. L. Holzapfel , J. E. Carlstrom , L. Grego , M. Joy , E. D. Reese

As the signal-to-noise of Sunyaev-Zeldovich (SZ) cross-correlation measurements of galaxies improves our ability to infer properties about the circumgalactic medium (CGM), we will transition from being limited by statistical uncertainties…

We present correlation results for the radio halo power in galaxy clusters with the integrated thermal Sunyaev-Zel'dovich (SZ) effect signal, including new results obtained at sub-GHz frequencies. The radio data is compiled from several…

宇宙学与河外天体物理 · 物理学 2013-05-07 Kaustuv Basu

By cross-correlating the 1.4 GHz FIRST catalog of radio sources with the Abell cluster catalog we have found an excess surface density by a factor ~5 of radio sources within a projected distance, r_p, of 0.1 Mpc (for h=0.65) from the…

天体物理学 · 物理学 2009-11-10 Marcella Massardi , Gianfranco De Zotti

The huge worldwide investment in CMB experiments should make the Sunyaev-Zeldovich (SZ) effect a key probe of the cosmic web in the near future. For the promise to be realized, substantial development of simulation and analysis tools to…

天体物理学 · 物理学 2007-05-23 J. Richard Bond , Marcelo I. Ruetalo , James W. Wadsley , Michael D. Gladders

We present CARMA 30 GHz Sunyaev-Zel'dovich (SZ) observations of five high-redshift ($z \gtrsim 1$), infrared-selected galaxy clusters discovered as part of the all-sky Massive and Distant Clusters of WISE Survey (MaDCoWS). The SZ decrements…

The WMAP Q, V, and W band radial profiles of temperature deviation of the cosmic microwave background (CMB) were constructed for a sample of 31 randomly selected nearby clusters of galaxies in directions of Galactic latitude $|b| >$ 30$^o$.…

天体物理学 · 物理学 2008-11-26 Richard Lieu , Jonathan P. D. Mittaz , Shuang-Nan Zhang

We examine the expected radio confusion on the thermal Sunyaev-Zel'dovich (SZ) effect of galaxy clusters at 28.5 GHz and 90 GHz based on the cluster radio luminosity function (CRLF) at 1.4 GHz. With the observationally determined spectral…

天体物理学 · 物理学 2007-05-23 Huichun Lin , Tzihong Chiueh , Xiang-Ping Wu

Clusters of galaxies provide valuable information on the evolution of the Universe and large scale structures. Recent cluster observations via the thermal Sunyaev-Zel'dovich (tSZ) effect have proven to be a powerful tool to detect and study…

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