Description
Chair: Jun'ichi Yokoyama (RESCEU, University of Tokyo)
Dr
Nicholas Kaiser
(Institute for Astronomy, U. Hawaii)
11/14/13, 10:40 AM
Cosmology
oral
Wojtak, Hansen and Hjorth (Nature, 2011) have measured the long-predicted
gravitational redshifts in galaxy clusters using Sloan Digital Sky
Survey data. The effect is very small, corresponding to a velocity shift
of only ~10 km/s in clusters with internal random motions ~600 km/s) but
is in good agreement with general relativity predictions and possibly in
conflict with some alternative...
Prof.
Rennan Barkana
(Tel Aviv University)
11/14/13, 11:05 AM
Cosmology
oral
A major frontier area in cosmology is cosmic reionization, the key
epoch in which the intergalactic hydrogen throughout the universe was
reionized after having recombined in the early universe. Despite
uncertainties about the sources of radiation at early times, it is
widely assumed that prior to reionization the cosmic gas must have
been pre-heated to well over the temperature of the...
Dr
Christopher Gauthier
(LaCosPa, National Taiwan University)
11/14/13, 11:30 AM
Cosmology
oral
Four years ago the Planck satellite was launched with the objective of furthering our understanding of the history and structure of the universe by making detailed measurements of the Cosmic Microwave Background. In March, the data and preliminary cosmological results from Planck were finally made public. The data collected by Planck is the most precise and comprehensive yet obtained, the full...
Joseph Bramante
(University of Notre Dame)
11/14/13, 11:55 AM
Cosmology
oral
In a universe much larger than our current Hubble volume, locally unobservable long wavelength modes can induce a scale-dependence in the power spectrum of typical subvolumes, so that the observed spectral index varies at a cosmologically significant level. This talk will explain how super-Hubble dynamics can impact sub-Hubble measurements and survey the features of inflation models that would...
