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We have imaged the Sunyaev-Zel'dovich (SZ) effect signals at 140 and 270 GHz towards ten galaxy clusters with Bolocam and AzTEC/ASTE. We also used Planck data to constrain the signal at large angular scales, Herschel-SPIRE images to…

The Sunyaev-Zel'dovich (SZ) effect is a direct probe of thermal energy content of the Universe, induced in the cosmic microwave background (CMB) sky through scattering of CMB photons off hot electrons in the intracluster medium (ICM). We…

天体物理学 · 物理学 2008-11-26 Niayesh Afshordi , Yen-Ting Lin , Daisuke Nagai , Alastair J. R. Sanderson

The hot electrons in the intra-cluster medium produce a spectral distorsion of the cosmic microwave background (CMB) black body emission, the thermal Sunyaev-Zel'dovich effect (tSZ). This characteristic spectral distorsion is now commonly…

宇宙学与河外天体物理 · 物理学 2017-08-23 G. Hurier , C. Tchernin

(Abridged) The hot gas in the IGM produces anisotropies in the Cosmic Microwave Background (CMB) through the thermal Sunyaev-Zel'dovich (SZ) effect. The SZ effect is a powerful probe of large-scale structure in the universe and must be…

天体物理学 · 物理学 2009-12-30 A. Refregier , E. Komatsu , D. N. Spergel , U. -L. Pen

In galaxy clusters the thermal Sunyaev-Zel'dovich (SZ) effect from the hot intracluster medium (ICM) provides a direct, self-contained measure of the pressure integrated over crossing lines of sight, that is intrinsically independent of…

宇宙学与河外天体物理 · 物理学 2015-06-23 A. Cavaliere , A. Lapi

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…

Galaxy cluster surveys compiled via the Sunyaev-Zeldovich Effect have the potential to place strong constraints on cosmology, and in particular the nature of dark energy. Here we consider cluster velocity surveys using kinetic…

天体物理学 · 物理学 2009-06-23 Suman Bhattacharya , Arthur Kosowsky

We present Sunyaev-Zel'dovich measurements of 15 massive X-ray selected galaxy clusters obtained with the South Pole Telescope. The Sunyaev-Zel'dovich (SZ) cluster signals are measured at 150 GHz, and concurrent 220 GHz data are used to…

Since its original formulation the Sunyaev-Zeldovich (SZ) effect has been recognized as a ``powerful laboratory'' for our comprehension of physical processes in cosmic structures and to derive crucial information on some general properties…

天体物理学 · 物理学 2009-06-23 Carlo Burigana

The Sunyaev-Zel'dovich (SZ) effects are produced by the interaction of cosmic microwave background (CMB) photons with the ionized and diffuse gas of electrons inside galaxy clusters integrated along the line of sight. The two main effects…

宇宙学与河外天体物理 · 物理学 2017-02-01 G. Hurier

The Sunyaev-Zel'dovich effect causes a change in the apparent brightness of the Cosmic Microwave Background Radiation towards a cluster of galaxies or any other reservoir of hot plasma. Measurements of the effect provide distinctly…

天体物理学 · 物理学 2008-11-26 M. Birkinshaw

Comptonization of the cosmic microwave background (CMB) radiation by hot gas in clusters of galaxies - the Sunyaev-Zeldovich (S-Z) effect - is of great astrophysical and cosmological significance. In recent years observations of the effect…

天体物理学 · 物理学 2007-05-23 Yoel Rephaeli

Studying galaxy clusters through their Sunyaev-Zel'dovich (SZ) imprint on the Cosmic Microwave Background has many important advantages. The total SZ signal is an accurate and precise tracer of the total pressure in the intra-cluster medium…

宇宙学与河外天体物理 · 物理学 2014-12-19 Keith Grainge , Stefano Borgani , Sergio Colafrancesco , Chiara Ferrari , Anna Scaife , Paolo Marchegiani , S. Emritte , J. Weller

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

We report measurements of the Sunyaev-Zel'dovich (SZ) effect in three high-redshift (0.89 < z < 1.03), X-ray selected galaxy clusters. The observations were obtained at 30 GHz during the commissioning period of a new, eight-element…

We present a catalog of 689 galaxy cluster candidates detected at significance $\xi>4$ via their thermal Sunyaev-Zel'dovich (SZ) effect signature in 95 and 150 GHz data from the 500-square-degree SPTpol survey. We use optical and infrared…

宇宙学与河外天体物理 · 物理学 2024-02-13 L. E. Bleem , M. Klein , T. M. C. Abbott , P. A. R. Ade , M. Aguena , O. Alves , A. J. Anderson , F. Andrade-Oliveira , B. Ansarinejad , M. Archipley , M. L. N. Ashby , J. E. Austermann , D. Bacon , J. A. Beall , A. N. Bender , B. A. Benson , F. Bianchini , S. Bocquet , D. Brooks , D. L. Burke , M. Calzadilla , J. E. Carlstrom , A. Carnero Rosell , J. Carretero , C. L. Chang , P. Chaubal , H. C. Chiang , T-L. Chou , R. Citron , C. Corbett Moran , M. Costanzi , T. M. Crawford , A. T. Crites , L. N. da Costa , T. de Haan , J. De Vicente , S. Desai , M. A. Dobbs , P. Doel , W. Everett , I. Ferrero , B. Flaugher , B. Floyd , D. Friedel , J. Frieman , J. Gallicchio , J. Garc'ia-Bellido , M. Gatti , E. M. George , G. Giannini , S. Grandis , D. Gruen , R. A. Gruendl , N. Gupta , G. Gutierrez , N. W. Halverson , S. R. Hinton , G. P. Holder , D. L. Hollowood , W. L. Holzapfel , K. Honscheid , J. D. Hrubes , N. Huang , J. Hubmayr , K. D. Irwin , J. Mena-Fernández , D. J. James , F. Kéruzoré , L. Knox , K. Kuehn , O. Lahav , A. T. Lee , S. Lee , D. Li , A. Lowitz , J. L. Marshal , M. McDonald , J. J. McMahon , F. Menanteau , S. S. Meyer , R. Miquel , J. J. Mohr , J. Montgomery , J. Myles , T. Natoli , J. P. Nibarger , G. I. Noble , V. Novosad , R. L. C. Ogando , S. Padin , S. Patil , M. E. S. Pereira , A. Pieres , A. A. Plazas Malag'on , C. Pryke , C. L. Reichardt , M. Rodr'iguez-Monroy , A. K. Romer , J. E. Ruhl , B. R. Saliwanchik , L. Salvati , E. Sanchez , A. Saro , K. K. Schaffer , T. Schrabback , I. Sevilla-Noarbe , C. Sievers , G. Smecher , M. Smith , T. Somboonpanyakul , B. Stalder , A. A. Stark , E. Suchyta , M. E. C. Swanson , G. Tarle , C. To , C. Tucker , T. Veach , J. D. Vieira , M. Vincenzi , G. Wang , J. Weller , N. Whitehorn , P. Wiseman , W. L. K. Wu , V. Yefremenko , J. A. Zebrowski , Y. Zhang

A significant cosmological radio background will inevitably lead to a radio Sunyaev-Zeldovich (SZ) effect. In the simplest limit, the combined signal from the scattered radio and cosmic microwave background exhibits a null at around $\nu…

宇宙学与河外天体物理 · 物理学 2022-04-06 Elizabeth Lee , Jens Chluba , Gilbert P. Holder

Near-future SZ surveys such as ACT, SPT, APEX, and Planck will find thousands of galaxy clusters. Multi-frequency arcminute-resolution SZ observations can, in principle, determine each cluster's gas temperature (T_e), bulk velocity (v_pec),…

天体物理学 · 物理学 2009-11-24 Neelima Sehgal , Arthur Kosowsky , Gilbert Holder

The Sunyaev-Zel'dovich (SZ) effect is the inverse Compton-scattering of cosmic microwave background (CMB) photons by hot electrons in the intervening gas throughout the universe. The effect has a distinct spectral signature that allows its…

The detailed spectral and spatial characteristics of the signature imprinted on the cosmic microwave background (CMB) radiation by Compton scattering of the radiation by electrons in the hot gas in clusters of galaxies - the…

天体物理学 · 物理学 2017-08-23 Yoel Rephaeli