Physics and Astronomy Cosmology Seminar

Dartmouth Events

Physics and Astronomy Cosmology Seminar

Mariusz Dabrowski, Institute of Physics, University of Szczecin and Copernicus Center, Krakow, Poland

Wednesday, December 4, 2013
Wilder 202
Intended Audience(s): Public
Categories: Lectures & Seminars
Title: "Testing Spherically Symmetric Inhomogeneous Pressure Cosmology"
Abstract:  The spherically symmetric inhomogeneous pressure Stephani universes are complementary to the spherically symmetric inhomogeneous density Lemaitre-Tolman- Bondi (LTB) models in the sense that unlike in LTB models the energy density is homogeneous but the pressure is not. In the talk, I will discuss the basic properties of the Stephani universes including their totally spacetime inhomogeneous (i.e. non- spherically symmetric) case. Then, I will discuss the observational validity of some exact spherically symmetric Stephani models in the context of supernovae data (for both centrally-placed and off-center observers), baryon acoustic oscillations, CMB shift parameter, and the redshift drift (or Sandage-Loeb) test. The latter is hoped to be reachable by next generation extremely large telescopes as well as by planned space-borne gravitational wave interferometers.


For more information, contact:
Tressena Manning

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