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Related papers: Sunyaev-Zel'dovich clusters reconstruction in mult…

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The Sunyaev-Zel'dovich effect is the ideal probe for investigating the outskirts of galaxy clusters. To map this signal, we apply a spectral imaging technique which combines parametric component separation and sparse representations. Our…

Cosmology and Nongalactic Astrophysics · Physics 2020-02-12 Anna Silvia Baldi , Hervé Bourdin , Pasquale Mazzotta

Galaxy clusters furnish extremely rich information on the contents and structure of our universe. The potential of galaxy cluster studies to constrain dark energy, for example, motivates a number of ambitious cluster surveys. Among these,…

Astrophysics · Physics 2007-05-23 James G. Bartlett

We use simulated maps to investigate the ability of high resolution, low noise surveys of the CMB to create catalogues of Clusters of galaxies by detecting the characteristic signature imprinted by the Sunyaev Zeldovich effect. We compute…

Astrophysics · Physics 2009-08-18 Chris Vale , Martin White

We develop a machine learning algorithm that generates high-resolution thermal Sunyaev-Zeldovich (SZ) maps of novel galaxy clusters given only halo mass and mass accretion rate. The algorithm uses a conditional variational autoencoder…

Cosmology and Nongalactic Astrophysics · Physics 2022-02-23 Tibor Rothschild , Daisuke Nagai , Han Aung , Sheridan B. Green , Michelle Ntampaka , John ZuHone

High-frequency, high-resolution imaging of the Sunyaev-Zel'dovich (SZ) effect is an important technique to study the complex structures of the atmospheres of merging galaxy clusters. Such observations are sensitive to the details of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 D. A. Prokhorov , S. Colafrancesco , T. Akahori , E. T. Million , S. Nagataki , K. Yoshikawa

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…

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

The combination of X-ray and SZ observations can potentially improve the cluster detection efficiency when compared to using only one of these probes, since both probe the same medium: the hot ionized gas of the intra-cluster medium. We…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-20 Paula Tarrío , Jean-Baptiste Melin , Monique Arnaud

We develop a new method to estimate the redshift of galaxy clusters through resolved images of the Sunyaev-Zel'dovich effect (SZE). Our method is based on morphological observables which can be measured by actual and future SZE experiments.…

Astrophysics · Physics 2009-11-07 J. M. Diego , J. Mohr , J. Silk , G. Bryan

We develop a new method for estimating the redshift of galaxy clusters through resolved images of the Sunyaev-Zel'dovich effect (SZE). Our method is based on morphological observables which can be measured by actual and future SZE…

Astrophysics · Physics 2007-05-23 J. M Diego , J. Mohr , J. Silk , G. Bryan

The South Pole Telescope (SPT) is conducting a Sunyaev-Zel'dovich (SZ) effect survey over large areas of the southern sky, searching for massive galaxy clusters to high redshift. In this preliminary study, we focus on a 40 square-degree…

We present a method to recover mass profiles of galaxy clusters by combining data on thermal Sunyaev-Zeldovich (tSZ) and X-ray imaging, thereby avoiding to use any information on X-ray spectroscopy. This method, which represents a…

Astrophysics · Physics 2009-11-13 S. Ameglio , S. Borgani , E. Pierpaoli , K. Dolag , S. Ettori , A. Morandi

I discuss galaxy cluster surveys based on the Sunyaev--Zel'dovich effect and their relevance for cosmological studies. The unique aspects of cluster selection by this method are emphasized and certain issues of surveying are addressed.…

Astrophysics · Physics 2007-05-23 J. G. Bartlett

In a search for evidence of the short wavelength increment in the Sunyaev-Zel'dovich (SZ) effect, we have analyzed archival galaxy cluster data from the Sub-millimetre Common User Bolometer Array (SCUBA) on the James Clerk Maxwell…

Astrophysics · Physics 2008-11-26 M. Zemcov , C. Borys , M. Halpern , P. Mauskopf , D. Scott

We present a catalog of 224 galaxy cluster candidates, selected through their Sunyaev-Zel'dovich (SZ) effect signature in the first 720 deg2 of the South Pole Telescope (SPT) survey. This area was mapped with the SPT in the 2008 and 2009…

We examine the ability of the Sunyaev-Zel'dovich effect (SZE) statistics proposed by Lee (2002) using numerical simulations. The statistics describe the distribution of the peak heights in the noise-contaminated SZE sky maps, and provide an…

Astrophysics · Physics 2007-05-23 Jounghun Lee , Naoki Yoshida

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