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(Abriged version) The Sunyaev-Zel'dovich (SZ) effect of galaxy clusters is a tool to measure three quantities: Compton parameter, electron temperature, and cluster peculiar velocity. However, a major problem is non-removed contamination by…

Astrophysics · Physics 2009-11-10 Nabila Aghanim , Steen H. Hansen , Guilaine Lagache

The Sunyaev-Zel'dovich (SZ) effect is a powerful tool for studying clusters of galaxies and cosmology. Large mm-wave telescopes are now routinely detecting and mapping the SZ effect in a number of clusters, measure their comptonisation…

Cosmology and Nongalactic Astrophysics · Physics 2012-04-09 Paolo de Bernardis , Sergio Colafrancesco , Giuseppe D' Alessandro , Luca Lamagna , Paolo Marchegiani , Silvia Masi , Alessandro Schillaci

Galaxy clusters are not iso-thermal, and the radial temperature dependence will affect the cluster parameters derived through the observation of the Sunyaev-Zeldovich (SZ) effect. We show that the derived peculiar velocity will be…

Astrophysics · Physics 2009-11-10 Steen H. Hansen

We present a user-friendly tool for the analysis of data from Sunyaev-Zeldovich effect observations. The tool is based on the stochastic method of simulated annealing, and allows the extraction of the central values and error-bars of the 3…

Astrophysics · Physics 2009-11-10 Steen H. Hansen

Observations of clusters in the 30 to 350 GHz range can in principle be used to determine a galaxy cluster's Comptonization parameter, y, peculiar velocity, v and gas temperature, T_e via the dependence of the kinetic and thermal…

Astrophysics · Physics 2009-11-10 Lloyd Knox , Gil Holder , Sarah Church

The Sunyaev-Zeldovich (SZ) effect is a promising tool to study physical properties of the hot X-ray emitting intracluster medium (ICM) in galaxy clusters. To date, most SZ observations have been interpreted in combination with X-ray…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Andrea Morandi , Daisuke Nagai , Wei Cui

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),…

Astrophysics · Physics 2009-11-24 Neelima Sehgal , Arthur Kosowsky , Gilbert Holder

Measurements of the Sunyaev-Zel'dovich (hereafter SZ) effect distortion of the cosmic microwave background provide methods to derive the gas pressure and temperature of galaxy clusters. Here we study the ability of SZ effect observations to…

High Energy Astrophysical Phenomena · Physics 2015-05-28 D. A. Prokhorov , S. Colafrancesco , T. Akahori , K. Yoshikawa , S. Nagataki , K. -I. Seon

The Sunyaev-Zel'dovich effect is a powerful tool for cosmology that can be used to measure the radial peculiar velocities of galaxy clusters, and thus to test, and constrain, theories of structure formation and evolution. This requires, in…

Astrophysics · Physics 2009-11-06 N. Aghanim , K. M. Górski , J. -L. Puget

We present a detailed investigation of issues related to the measurement of peculiar velocities and temperatures using Sunyaev-Zel'dovich (SZ) effects. We estimate the accuracy to which peculiar velocities and gas temperatures of distant…

Astrophysics · Physics 2009-11-07 Gilbert P. Holder

We present gas constraints from Sunyaev-Zel'dovich (SZ) effect measurements in a sample of eleven X-ray and infrared (IR) selected galaxy clusters at z >=1, using data from the Sunyaev-Zel'dovich Array (SZA). The cylindrically integrated…

Future multifrequency microwave background experiments with arcminute resolution and micro-Kelvin temperature sensitivity will be able to detect the kinetic Sunyaev-Zeldovich (kSZ) effect, providing a way to measure radial peculiar…

Astrophysics · Physics 2008-11-26 Suman Bhattacharya , Arthur Kosowsky

The possibility of determining the value of the Hubble constant using observations of galaxy clusters in X-ray and microwave wavelengths through the Sunyaev Zel\'dovich (SZ) effect has long been known. Previous measurements have been…

Cosmology and Nongalactic Astrophysics · Physics 2019-03-27 Arpine Kozmanyan , Hervé Bourdin , Pasquale Mazzotta , Elena Rasia , Mauro Sereno

We present an improved method for predicting the Sunyaev-Zeldovich (SZ) effect in galaxy clusters from spatially-resolved, spectroscopic X-ray data. Using the deprojected electron density and temperature profiles measured within a fraction…

Astrophysics · Physics 2009-09-17 R. W. Schmidt , S. W. Allen , A. C. Fabian

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…

Astrophysics · Physics 2009-11-07 Steen H. Hansen , Sergio Pastor , Dmitry V. Semikoz

The latest Planck results on the power spectrum of the Compton-$y$ parameter are the most accurate probe of the thermal Sunyaev Zeldovich (tSZ) effect caused by resolved and un-resolved clusters of galaxies. On large angular scales, the…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-14 Boris Bolliet

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…

A method for estimating redshifts of galaxy clusters based solely on resolved Sunyaev-Zel'dovich (SZ) images is proposed. Given a high resolution SZ cluster image (with FWHM of approx. 1 arcmin), the method indirectly measures its structure…

Astrophysics · Physics 2013-03-07 Bjoern Malte Schaefer , Christoph Pfrommer , Saleem Zaroubi

New generation ground and space-based CMB experiments have ushered in discoveries of massive galaxy clusters via the Sunyaev-Zeldovich (SZ) effect, providing a new window for studying cluster astrophysics and cosmology. Many of the newly…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Jens Chluba , Daisuke Nagai , Sergey Sazonov , Kaylea Nelson

The hot gas in clusters of galaxies creates a distinctive spectral distortion in the cosmic microwave background (CMB) via the Sunyaev-Zeldovich (SZ) effect. To first order, the shape of the spectral distortion is fixed, but relativistic…

Cosmology and Nongalactic Astrophysics · Physics 2019-03-13 Adam D. Hincks , Ricardo Génova-Santos , Gemma Luzzi , Elia Stefano Battistelli
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