University of Illinois at Urbana-Champaign logo

Quick links

E-mail and search functions


Astronomy Department Calendar

Astronomy Department Calendar

skip to events

calendar tabs

  •  All 
  • Grid
  • Month
  • Week
  • Day
  • (Selected tab) Detail

Event Detail Information

Event Detail Information

Astronomy Colloquium: "Counting Giants: Cosmology from Massive Sunyaev-Zel'dovich Galaxy Clusters"

Speaker Felipe Menanteau
Date Sep 3, 2013
Time 4:00 pm - 5:00 pm  
Location Astronomy 134
Sponsor Department of Astronomy
Event type Colloquia
Views 5997
We have reached the era where microwave surveys such as the Atacama Cosmology Telescope (ACT), the South Pole Telescope (SPT) and Planck are reporting their samples of massive galaxy clusters through the Sunyaev-Zel'dovich (SZ) effect. In this talk I will introduce a new set of optically-confirmed high redshift galaxy clusters discovered by ACT through the SZ effect observations since 2009 as well as our ambitious program to identify and characterize the galaxy clusters using a plethora of multi-wavelength observations (Chandra, XMM, Spitzer, Hubble, Gemini and VLT). As part of this program I will discuss our discovery of "El Gordo" as the most massive and hottest (X-ray) cluster known in the distant universe and its implications within the LCDM framework. I will also discuss our large program aimed to calibrate the different mass scaling relations for clusters necessary to exploit their counts as a function of mass and redshift to probe of structure growth and cosmology.