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Upcoming millimeter experiments that probe the cosmic microwave background (CMB) will observe tens of thousands of galaxy clusters through the thermal Sunyaev-Zeldovich (tSZ) effect. tSZ selected clusters are powerful probes of cosmological…

宇宙学与河外天体物理 · 物理学 2019-10-02 Dylan Cromer , Nicholas Battaglia , Mathew S. Madhavacheril

Sunyaev-Zeldovich (SZ) surveys find massive clusters of galaxies by measuring the inverse Compton scattering of cosmic microwave background off of intra-cluster gas. The cluster selection function from such surveys is expected to be nearly…

宇宙学与河外天体物理 · 物理学 2015-06-23 Henry W. Lin , Michael McDonald , Bradford Benson , Eric Miller

Galaxy clusters imprint a distinctive signature on the cosmic microwave background through the thermal Sunyaev-Zel'dovich (SZ) effect, which enables to study the intracluster plasma distribution and makes them powerful cosmological probes.…

宇宙学与河外天体物理 · 物理学 2026-03-03 S. Cocchi , F. Loi , M. Murgia , P. Marchegiani , V. Vacca , F. Govoni , F. Gandossi , G. Rodighiero

We use an analytic model to investigate the theoretical uncertainty on the thermal Sunyaev-Zel'dovich (SZ) power spectrum due to astrophysical uncertainties in the thermal structure of the intracluster medium. Our model accounts for star…

宇宙学与河外天体物理 · 物理学 2015-05-19 Laurie D. Shaw , Daisuke Nagai , Suman Bhattacharya , Erwin T. Lau

The power spectrum of unresolved thermal Sunyaev-Zeldovich (tSZ) clusters is extremely sensitive to the amplitude of the matter fluctuations. This paper present an analysis of the tSZ power spectrum using temperature power spectra of the…

宇宙学与河外天体物理 · 物理学 2025-05-16 George Efstathiou , Fiona McCarthy

The Sunyaev-Zeldovich (SZ) effect has proven to be an extremely powerful tool to study the physical and evolutionary properties of rich clusters of galaxies. Upcoming SZ experiments, with their much improved sensitivity and angular…

天体物理学 · 物理学 2009-11-10 G. De Zotti , C. Burigana , A. Cavaliere , L. Danese , G. L. Granato , A. Lapi , P. Platania , L. Silva

The intensity of the cosmic microwave background radiation in the fields of clusters of galaxies is modified by inverse Compton scattering in the hot intracluster gas - the Sunyaev-Zel'dovich (SZ) effect. The effect is expected to be most…

天体物理学 · 物理学 2009-10-30 Andrew W. Blain

Forthcoming measurements of the Sunyaev-Zeldovich (SZ) effect in galaxy clusters will dramatically improve our understanding of the main intra-cluster medium (ICM) properties and how they depend on the particular thermal and dynamical state…

宇宙学与河外天体物理 · 物理学 2025-03-14 Óscar Monllor-Berbegal , David Vallés-Pérez , Susana Planelles , Vicent Quilis

With increasing sensitivity, angular resolution, and frequency coverage, future cosmic microwave background (CMB) experiments like PICO will allow us to access new information about galaxy clusters through the relativistic thermal…

宇宙学与河外天体物理 · 物理学 2020-05-13 Mathieu Remazeilles , Jens Chluba

The Chandra X-ray Observatory is finding a large number of cavities in the X-ray emitting intra-cluster medium which often coincide with the lobes of the central radio galaxy. We propose high-resolution Sunyaev-Zel'dovich (SZ) observations…

天体物理学 · 物理学 2009-11-10 Christoph Pfrommer , Torsten A. Ensslin , Craig L. Sarazin

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

A recent stacking analysis of Planck HFI data of galaxy clusters (Hurier 2016) allowed to derive the cluster temperatures by using the relativistic corrections to the Sunyaev-Zel'dovich effect (SZE). However, the temperatures of…

宇宙学与河外天体物理 · 物理学 2017-06-28 P. Marchegiani , S. Colafrancesco

We consider the effect of the cosmic microwave background (CMB) frequency spectral distortions arising due to the Compton scattering of the anisotropic radiation on Sunyaev-Zel'dovich (SZ) clusters. We derive the correction to the thermal…

宇宙学与河外天体物理 · 物理学 2019-02-22 I. G. Edigaryev , D. I. Novikov , S. V. Pilipenko

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

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

Radio halos are synchrotron radio sources detected in some massive galaxy clusters. Their Mpc-size indicates that (re)acceleration processes are taking place in the host cluster. X-ray catalogues of galaxy clusters have been used in the…

宇宙学与河外天体物理 · 物理学 2015-10-28 A. Bonafede , H. T. Intema , M. Brüggen , F. Vazza , K. Basu , M. Sommer , H. Ebeling , F. de Gasperin , H. J. A. Röttgering , R. J. van Weeren , R. Cassano

The Sunyaev--Zel'dovich (SZ) effect is a global distortion of the Cosmic Microwave Background (CMB) spectrum as a result of its interaction with a hot electron plasma in the intracluster medium of large structures gravitationally viralized…

宇宙学与河外天体物理 · 物理学 2018-01-25 Alexander Bonilla , Jairo E. Castillo

We present predicted Sunyaev-Zeldovich (SZ) properties of known X-ray clusters of galaxies for which gas temperature measurements are available. The reference sample was compiled from the BAX database for X-ray clusters. The…

宇宙学与河外天体物理 · 物理学 2015-05-14 Luis Ferramacho , Alain Blanchard

Cross correlation with thermal Sunyaev-Zel'dovich (tSZ) effect in cosmic microwave background observation and weak gravitational lensing effect in galaxy imaging survey opens a new window on constraining matter contents in the Universe at…

宇宙学与河外天体物理 · 物理学 2018-12-05 Masato Shirasaki

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