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Related papers: Sunyaev-Zel'dovich scaling relations from a simple…

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Using WMAP 5 year data, we look for the average Sunyaev-Zel'dovich effect (SZE) signal from clusters of galaxies by stacking the regions around hundreds of known X-ray clusters. We detect the average SZE at a very high significance level.…

Cosmology and Nongalactic Astrophysics · Physics 2019-05-29 J. M Diego , B. Partridge

The pressure of hot gas in groups and clusters of galaxies is a key physical quantity, which is directly linked to the total mass of the halo and several other thermodynamical properties. In the wake of previous observational works on the…

An important result from self-similar models that describe the process of galaxy cluster formation is the simple scaling relation $Y_{\rm SZE}D_{\rm A}^{2}/C_{\rm XSZE}Y_{\rm X}= C$. In this ratio, $Y_{\rm SZE}$ is the integrated…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-01 R. F. L. Holanda , W. J. C. da Silva

We use observations of Sunyaev-Zel'dovich effect and X-ray surface brightness to reconstruct the radial profiles of gas temperature and density under the assumption of a spherically symmetric distribution of the gas. The method of…

Astrophysics · Physics 2009-06-23 Qiang Yuan , Tong-Jie Zhang , Bao-Quan Wang

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…

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$^o$.…

Astrophysics · Physics 2008-11-26 Richard Lieu , Jonathan P. D. Mittaz , Shuang-Nan Zhang

We report on results of interferometric imaging of the Sunyaev-Zel'dovich Effect (SZE) with the OVRO and BIMA mm-arrays. Using low-noise cm-wave receivers on the arrays, we have obtained high quality images for 27 distant galaxy clusters.…

The Sunyaev-Zeldovich (SZ) effect is a powerful tool in modern cosmology. With future observations promising ever improving SZ measurements, the relativistic corrections to the SZ signals from galaxy groups and clusters are increasingly…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-12 Elizabeth Lee , Dhayaa Anbajagane , Priyanka Singh , Jens Chluba , Daisuke Nagai , Scott T. Kay , Weiguang Cui , Klaus Dolag , Gustavo Yepes

Recent measurements of the Sunyaev-Zel'dovich (SZ) angular power spectrum from the South Pole Telescope (SPT) and the Atacama Cosmology Telescope (ACT) demonstrate the importance of understanding baryon physics when using the SZ power…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 M. Sun , N. Sehgal , G. M. Voit , M. Donahue , C. Jones , W. Forman , A. Vikhlinin , C. Sarazin

We have created mock Sunyaev-Zel'dovich effect (SZE) surveys of galaxy clusters using high resolution N-body simulations. To the pure surveys we add `noise' contributions appropriate to instrument and primary CMB anisotropies. Applying…

Astrophysics · Physics 2008-11-26 A. E. Schulz , Martin White

Using sensitive centimeter-wave receivers mounted on the Owens Valley Radio Observatory and Berkeley-Illinois-Maryland-Association millimeter arrays, we have obtained interferometric measurements of the Sunyaev-Zel'dovich (SZ) effect toward…

We have performed a combined analysis of X-ray and Sunyaev-Zel'dovich data in the direction of the distant galaxy cluster, RX J2228+2037. Fitting a $\beta$-model to the high-resolution HRI data gives $r_c = 103 \pm 12 h_{70}^{-1}$ kpc and…

Astrophysics · Physics 2009-11-07 E. Pointecouteau , M. Hattori , D. M. Neumann , E. Komatsu , H. Matsuo , N. Kuno , H. Bohringer

We consider the Sunyaev-Zel'dovich (SZ) effect as a probe of Omega_o: Using a self-consistent modeling of X-ray clusters, we examine the dependence of both the mean Compton y parameter and the SZ source counts on Omega_o. These quantities…

Astrophysics · Physics 2011-05-23 D. Barbosa , J. G. Bartlett , A. Blanchard , J. Oukbir

The advent of high-resolution imaging of galaxy clusters using the Sunyaev-Zel'dovich Effect (SZE) provides a unique probe of the astrophysics of the intracluster medium (ICM) out to high redshifts. To investigate the effects of cluster…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 John J. Ruan , Thomas R. Quinn , Arif Babul

The Sunyaev-Zeldovich (SZ) effect was first predicted nearly five decades ago, but has only recently become a mature tool for performing high resolution studies of the warm and hot ionized gas in and between galaxies, groups, and clusters.…

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…

Astrophysics · Physics 2009-11-10 P. J. Marshall , M. P. Hobson , A. Slosar

The relation between the mass and integrated electron pressure of galaxy group and cluster halos can be probed by stacking maps of the thermal Sunyaev-Zel'dovich (tSZ) effect. Perhaps surprisingly, recent observational results have…

Cosmology and Nongalactic Astrophysics · Physics 2018-04-11 J. Colin Hill , Eric J. Baxter , Adam Lidz , Johnny P. Greco , Bhuvnesh Jain

We propose a new method to model cluster scaling relations in modified gravity. Using a suite of non-radiative hydrodynamical simulations, we show that the scaling relations of cumulative gas quantities, such as the Sunyaev Zel'dovich…

Cosmology and Nongalactic Astrophysics · Physics 2016-06-15 Jian-hua He , Baojiu Li

In recent years, observations of the Sunyaev-Zeldovich (SZ) effect have had significant cosmological implications and have begun to serve as a powerful and independent probe of the warm and hot gas that pervades the Universe. As a few…

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