ACP Seminar (Astronomy - Cosmology - Particle Physics)

Speaker: Eduardo Rozo (SLAC)
Title: Planck cosmology, Galaxy Clusters, and Neutrino Masses: the View from the Optical
Date (JST): Tue, Feb 25, 2014, 13:30 - 15:00
Place: Seminar Room B
Related File: 1140.pdf
Abstract: One of the most notorious results in the recent wave of Planck publications is that the abundance of galaxy clusters in the local Universe (as measured by Planck) cannot be reconciled with the cosmological parameters inferred from the primary CMB fluctuations in a vanilla LCDM cosmology. One possible resolution to this problem are massive neutrinos, a tantalizing result! We will critically review the evidence for a non-zero neutrino mass, with a particular emphasis on the caveats that go into this conclusion. We will place these results within the context of a unified multi-wavelenth picture of galaxy clusters, and how galaxy clusters complement the CMB.