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X-ray emission and the thermal Sunyaev-Zel'dovich distortion to the Cosmic Microwave Background are two important handles on the gas content of the Universe. The cross-correlation between these effects eliminates noise bias and reduces…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-18 Victoria Lakey , Kevin Huffenberger

We performed high-resolution simulations of a sample of 14 galaxy clusters that span a mass range from 5 x 10^13 M_solar/h to 2 x 10^15 M_solar/h to study the effects of cosmic rays (CRs) on thermal cluster observables such as X-ray…

The pairwise kinematic Sunyaev-Zel'dovich (kSZ) signal from galaxy clusters is a probe of their line-of-sight momenta, and thus a potentially valuable source of cosmological information. In addition to the momenta, the amplitude of the…

Cosmology and Nongalactic Astrophysics · Physics 2016-07-04 Samuel Flender , Lindsey Bleem , Hal Finkel , Salman Habib , Katrin Heitmann , Gilbert Holder

In recent years, significant progress has been made in building new galaxy clusters samples, at low and high redshifts, from wide-area surveys, particularly exploiting the Sunyaev--Zel'dovich (SZ) effect. A large effort is underway to…

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…

Cosmology and Nongalactic Astrophysics · Physics 2016-11-15 R. F. L. Holanda , J. A. S. Lima , J. V. Cunha

Using both halo model calculations and a large sample of simulated SZ maps, we demonstrate that high-mass clusters add significant non-Gaussian variance to measurements of the SZ power spectrum amplitude. The difficulty in correctly…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-17 L. D. Shaw , O. Zahn , G. P. Holder , O. Doré

We present observations from the Small Array of the Arcminute Microkelvin Imager (AMI) of eight high X-ray luminosity galaxy cluster systems selected from the Local Cluster Substructure Survey (LoCuSS) sample.We detect the…

We describe a maximum-likelihood technique for the removal of contaminating radio sources from interferometric observations of the Sunyaev-Zel'dovich (SZ) effect. This technique, based on a simultaneous fit for the radio sources and…

We present the results of spectroscopic redshift measurements for the galaxy clusters from the first all-sky Planck catalogue of the Sunyaev-Zeldovich sources, that have been mostly identified by means of the optical observations performed…

The recently approved COBRAS/SAMBA cosmic microwave background mission will also have a major impact on measurements of the Sunyaev-Zeldovich effect. The frequency of three of the channels (150 GHz, 217 GHz, 353 GHz) are chosen to optimize…

Astrophysics · Physics 2007-05-23 Martin G. Haehnelt

A kinematic method to access cosmic acceleration based exclusively on the Sunyaev-Zel'dovich effect (SZE) and X-ray surface brightness data from galaxy clusters is proposed. By using the SZE/X-ray data from 38 galaxy clusters [Bonament et…

Cosmology and Nongalactic Astrophysics · Physics 2009-05-19 J. A. S. Lima , R. F. L. Holanda , J. V. Cunha

The fluctuations in the Cosmic Microwave Background (CMB) intensity due to the Sunyaev-Zeldovich (SZ) effect are the sum of a thermal and a kinetic contribution. Separating the two components to measure the peculiar velocity of galaxy…

We present a determination of the Hubble constant from measurements of the Sunyaev-Zeldovich Effect (SZE) in an orientation-unbiased sample of 7 z < 0.1 galaxy clusters. With improved X-ray models and a more accurate 32-GHz calibration, we…

Astrophysics · Physics 2017-08-23 Brian S. Mason , Steven T. Myers , A. C. S. Readhead

We report our analysis of MACS J0717.5+3745 using 140 and 268 GHz Bolocam data collected at the Caltech Submillimeter Observatory. We detect extended Sunyaev-Zel'dovich (SZ) effect signal at high significance in both Bolocam bands, and we…

We present the optical and X-ray properties of four clusters recently discovered by the South Pole Telescope (SPT) using the Sunyaev-Zel'dovich effect (SZE). The four clusters are located in one of the common survey areas of the southern…

Astrophysics · Physics 2009-11-13 Felipe Menanteau , John P. Hughes

We present recent high angular resolution (9") Sunyaev-Zel'dovich effect (SZE) observations with MUSTANG, a 90-GHz bolometric receiver on the Green Bank Telescope. MUSTANG has now imaged several massive clusters of galaxies in some of the…

Cosmology and Nongalactic Astrophysics · Physics 2011-01-26 Tony Mroczkowski , Mark Devlin , Simon Dicker , Phillip Korngut , Brian Mason , Erik Reese , Craig Sarazin , Jonathon Sievers , Ming Sun , Alex Young

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…

Astrophysics · Physics 2007-05-23 Huichun Lin , Tzihong Chiueh , Xiang-Ping Wu

The imaging of galaxy clusters through the Sunyaev--Zel'dovich effect is a valuable tool to probe the thermal pressure of the intra-cluster gas, especially in the outermost regions where X-ray observations suffer from photon statistics. For…

Cosmology and Nongalactic Astrophysics · Physics 2019-10-09 Anna Silvia Baldi , Hervé Bourdin , Pasquale Mazzotta , Dominique Eckert , Stefano Ettori , Massimo Gaspari , Mauro Roncarelli

An extensive sample of galaxy clusters will be available in the coming years, detected through their Sunyaev-Zeldovich effect (SZE). We use a semi-analytic model to study the scientific yield of combining SZE data with X-ray and optical…

Astrophysics · Physics 2009-11-06 Licia Verde , Zoltan Haiman , David N. Spergel