Dartmouth Events

Physics and Astronomy Colloquium - Christine Jones, Harvard University

Title: "The Most Massive Clusters of Galaxies in the Universe"

Friday, April 17, 2015
3:30pm – 4:30pm
Wilder 104
Intended Audience(s): Public
Categories: Lectures & Seminars

Abstract:  ESA's Planck Mission has provided a large, statistically
representative sample of massive clusters, detected over the full
sky through their SZ effect.  Since the strength of the SZ signal is
directly correlated with total cluster mass, the Planck detections
provide a good estimate of the cluster mass. To better understand the 
growth of massive clusters, we are using Chandra observations of 165
Planck detected clusters at redshifts z<0.35 to determine cluster morphologies.   
I will show a comparison of the cluster morphologies in SZ selected samples
compared to X-ray and optically    selected samples.  In addition, among these very massive
systems are the HST Frontier Field clusters.  For these we are combining deep X-ray,
radio and optical/IR observations to better understand cluster mergers,
the transformations of cluster galaxies, the generation of radio halos and relics,
as well as to identify X-ray and radio AGN that are lensed by the cluster.

 

For more information, contact:
Tressena Manning
603-646-2854

Events are free and open to the public unless otherwise noted.