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We use observational measurements of thermal and kinetic Sunyaev-Zel'dovich effects, as well as soft X-ray emission associated with galaxy groups to constrain the gas density and temperature in the circumgalactic medium (CGM) for dark…

Astrophysics of Galaxies · Physics 2020-11-04 Xuanyi Wu , Houjun Mo , Cheng Li , Seunghwan Lim

The Planck collaboration has recently published precise and resolved measurements of the Sunyaev-Zel'dovich effect in Abell 1656 (the Coma cluster of galaxies), so directly gauging the electron pressure profile in the intracluster plasma.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 R. Fusco-Femiano , A. Lapi , A. Cavaliere

We explore the significance of noise from thermal Sunyaev-Zel{'}dovich (tSZ) signals for cluster detection using cosmic microwave background (CMB) surveys. The noise arises both from neighboring objects and also from haloes below the…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-30 Srinivasan Raghunathan

Since recent X-ray observations have revealed that most clusters of galaxies are surrounded by an X-ray emitting gaseous halo, it is reasonable to expect that the Local Group of galaxies has its own X-ray halo. We show that such a halo,…

Astrophysics · Physics 2007-05-23 Yasushi Suto

We study the clustering properties of the galaxy clusters detectable for the Planck satellite due to their thermal Sunyaev-Zel'dovich effect. We take the past light-cone effect and the redshift evolution of both the underlying dark matter…

Astrophysics · Physics 2009-11-07 Lauro Moscardini , Matthias Bartelmann , Sabino Matarrese , Paola Andreani

Many state-of-the-art galaxy simulations featuring traditional feedback modes have significant challenges producing enough extended soft X-ray ($\sim 0.5-2$ keV) emission at R $\sim 0.5-1$ R$_{\rm vir}$ observed around galaxies with stellar…

Astrophysics of Galaxies · Physics 2026-01-21 Sam B. Ponnada , Philip F. Hopkins , Yue Samuel Lu , Emily M. Silich , Iryna S. Butsky , Dusan Keres

We present gas mass fractions of 38 massive galaxy clusters spanning redshifts from 0.14 to 0.89, derived from Chandra X-ray data and OVRO/BIMA interferometric Sunyaev-Zel'dovich Effect measurements. We use three models for the gas…

Astrophysics · Physics 2008-11-26 S. LaRoque , M. Bonamente , J. Carlstrom , M. Joy , D. Nagai , E. Reese , K. Dawson

While most of the microwave background fluctuations on angular scales greater than a few arcminutes were generated at z > 800, the low redshift universe does distort the microwave background. Since the Sloan Digital Sky Survey (SDSS) traces…

Astrophysics · Physics 2009-10-31 Hiranya V. Peiris , David N. Spergel

We extend the formalism of the relativistic thermal and kinematic Sunyaev-Zel'dovich effects and include the polarization of the cosmic microwave background photons. We consider the situation that a cluster of galaxies is moving with a…

Astrophysics · Physics 2015-06-24 Naoki Itoh , Satoshi Nozawa , Yasuharu Kohyama

The angular power spectrum of the SZ effect, C_l, is a powerful probe of cosmology. It is easier to detect than individual clusters in the field, is insensitive to observational selection effects and does not require a calibration between…

Astrophysics · Physics 2009-11-07 Eiichiro Komatsu , Uros Seljak

We present templates for the Sunyaev-Zel'dovich (SZ) angular power spectrum based on four models for the nonlinear gas distribution. The frequency-dependent SZ temperature fluctuations, with thermal (TSZ) and kinetic (KSZ) contributions,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Hy Trac , Paul Bode , Jeremiah P. Ostriker

We present the preparation for an observation of the Sunyaev-Zeldovich (SZ) effect with the 100m telescope in Effelsberg. We calculate the expected diminution of the cosmic microwave background radiation (CMB) at radio wavelength towards a…

Astrophysics · Physics 2007-05-23 Michael Thierbach , Reinhard Schlickeiser , Richard Wielebinski

We use numerical simulations to predict the soft X-ray ([0.4-0.6] keV) and Sunyaev-Zeldovich signal (at 150 GHz) from the large scale structure in the Universe and then compute 2-point statistics to study the spatial distribution and time…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 Eugenio Ursino , Massimiliano Galeazzi , Kevin Huffenberger

The Sunyaev-Zel'dovich (SZ) effect of a cluster of galaxies is usually measured after background radio sources are removed from the cluster field. Gravitational lensing by the cluster potential leads to a systematic deficit in the residual…

Astrophysics · Physics 2009-10-28 Abraham Loeb , Alexandre Refregier

We present a comprehensive set of forecasts for the cross-correlation signal between 21cm intensity mapping and galaxy redshift surveys. We focus on the data sets that will be provided by the SKAO for the 21cm signal, DESI and Euclid for…

Cosmology and Nongalactic Astrophysics · Physics 2024-04-10 Maria Berti , Marta Spinelli , Matteo Viel

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…

The Sunyaev-Zel'dovich (SZ) effect associated with pressure fluctuations of the large scale structure gas distribution will be probed with current and upcoming wide-field small angular scale cosmic microwave background experiments. We study…

Astrophysics · Physics 2008-11-26 Asantha Cooray

Due to cosmic variance we cannot learn any more about large-scale inhomogeneities from the primary cosmic microwave background (CMB) alone. More information on large scales is essential for resolving large angular scale anomalies in the…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-08 Alexandra Terrana , Mary-Jean Harris , Matthew C. Johnson

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…

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…