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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C09005 - Sunyaev-Zeldovich Universe and the Future of Cluster CosmologyPODCAST Subscribe to podcast

Galaxy clusters have played a crucial role in the development of modern cosmology over the past century. Thanks to the next generation of high resolution microwave telescopes, a new generation of cluster surveys (detected through the Sunyaev-Zel'dovich (SZ) effect) are under way and promise to provide us with a catalog of hundreds to thousands of new high redshift clusters over the next few years. This conference aims to bring together experts in SZ observations and cluster cosmology to understand the status/implications of current clusters surveys, and find a consensus on the future promise/prospects of cosmology with galaxy clusters.

Organizer(s): Niayesh Afshordi   Gil Holder   Michael Balogh   Lyman Page  

Collection URL: http://pirsa.org/C09005

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The imprint of supernovae and AGN feedback on the SZ sky
Speaker(s): Peng Oh
Abstract: I discuss whether supernovae at high-redshift can result in a detectable SZ signal at small angular scales. I also discuss various aspects of AGN feedback on galaxy clusters.
Date: 27/04/2009 - 9:45 am

Probing Cosmology and Cluster Structure with the Sunyaev–Zel’dovich Decrement vs. X–ray Temperature Scaling Relation
Speaker(s): Cien Shang
Abstract: Scaling relations among galaxy cluster observables, which will become available in large future samples of galaxy clusters, could be used to constrain not only cluster structure,but also cosmology. I will discuss the utility of this approach, employing a physically motivated parametric model to desc... read more
Date: 27/04/2009 - 11:00 am

Heating and Cooling of the Intracluster Medium
Speaker(s): Arif Babul
Abstract: The observed thermal properties of the ICM shows much greater dispersion than expected if the gas was subject only to shock-heating by mergers and during infall. This diversity can be best understood as a byproduct of AGN feedback occurring in galaxies destined to become cluster members, both before... read more
Date: 27/04/2009 - 11:30 am

Energetics of the Intracluster Medium
Speaker(s): Paul Bode
Abstract: "Taking gravitational potential wells from a dark matter simulation, and assuming a polytropic equation of state and hydrostatic equilibrium, one can predict the state of the hot gas in clusters of galaxies. With reasonable values for star formation efficiency, energy input, and nonthermal pressure ... read more
Date: 27/04/2009 - 2:00 pm

XRay observations normalized ICM models: SZ scaling relations and cosmological implications
Speaker(s): Subha Majumdar
Abstract: We build simple, 'top-down', models for the gas density and temperature profiles for clusters of galaxies based on current high precision XRay observations so as to 'exactly' satisfy observed XRay scaling relation between temperature and mass. The gas is assumed to be in hydrostatic equilibrium alo... read more
Date: 27/04/2009 - 2:45 pm

The XMM Cluster Survey - Scaling Relations, Cosmology and Galaxy Evolution
Speaker(s): Matt Hilton
Abstract: The XMM Cluster Survey (XCS) is a serendipitous galaxy cluster survey being conducted using publicly available X-ray data from the XMM-Newton Science Archive. One of the primary aims of the XCS is to determine the form of the evolution of the cluster gas - knowledge of which is crucial for the use o... read more
Date: 27/04/2009 - 3:30 pm
Tech Note: Failed to Convert to Flash - Jacob W. Stauttener

Thermodynamics of Galaxy Clusters and Beyond
Speaker(s): Daisuke Nagai
Abstract: Clusters of galaxies are unique probes of cosmology and astrophysics, promising to provide new insights into both the nature of dark energy and dark matter and the physics of galaxy formation. One of the key challenges facing this approach lies in our understanding of cluster physics and their impa... read more
Date: 27/04/2009 - 4:45 pm

The imprint of cluster physics on the Sunyaev-Zel’dovich effect -from bubbles to cosmological parameters
Speaker(s): Christoph Pfrommer
Abstract: Clusters of galaxies provide us the opportunity to study an "ecosystem" - a volume that is a high-density microcosm of the rest of the Universe. At the same time clusters are excellent laboratories for studying plasma physical processes as well as for studying how super-massive black holes interact ... read more
Date: 27/04/2009 - 5:30 pm

The Power of Sunyaev-Zeldovich, Then and Now
Speaker(s): Richard Bond
Abstract: This talk will describe the theoretical history "THEN" of CITA's semi-analytic and simulation forecasts of the "ambient" (aka blank field) SZ effect, from the beginnings in the mid-80s to the "NOW" and near future of copious ACT and SPT ambient-SZ cluster detections, Along the way, we will recall th... read more
Date: 28/04/2009 - 9:00 am

How non-thermal processes of the intracluster medium affect the Sunyaev-Zeldovich angular power spectrum
Speaker(s): Nick Battagalia
Abstract: "There is considerable uncertainty in the theoretical predictions for the angular power spectrum from the Sunyaev-Zeldovich effect (SZe). The level of precision reached by ACT, SPT, and Planck for measurements of the normalization of the SZe power spectrum, sigma_8, will be limited by the uncertaint... read more
Date: 28/04/2009 - 9:45 am

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