Date:
Thu, 13/01/201111:00-12:00
Title:
Black Holes, Post-Newtonian Parameters and Gravitational Waves in the Tensor-Vector-Scalar theory of gravity.
Abstract:
Observations on all scales point to a gap in our understanding of gravitation; from the Pioneer anomaly in the solar system, through the shape of galaxy rotation curves and the amount of gravitational lensing by galaxy clusters, to the accelerated expansion of the universe. This observed discrepancy between the dynamics and the distribution of the visible matter in the universe is usually ascribed to dark matter and dark energy. However, it is possible that both dark matter and dark energy are in fact manifestations of a theory of gravity different than General Relativity. One possible alternative theory is TeVeS, suggested by Bekenstein in 2004. I will review several features of TeVeS, among them black holes, the cosmological evolution of fundamental constants, its PPN parameters which show it to be indiscernible from GR in the solar system and the unusual behavior of gravitational waves in its framework, which can be traced back to the theory's MOND origin.
Black Holes, Post-Newtonian Parameters and Gravitational Waves in the Tensor-Vector-Scalar theory of gravity.
Abstract:
Observations on all scales point to a gap in our understanding of gravitation; from the Pioneer anomaly in the solar system, through the shape of galaxy rotation curves and the amount of gravitational lensing by galaxy clusters, to the accelerated expansion of the universe. This observed discrepancy between the dynamics and the distribution of the visible matter in the universe is usually ascribed to dark matter and dark energy. However, it is possible that both dark matter and dark energy are in fact manifestations of a theory of gravity different than General Relativity. One possible alternative theory is TeVeS, suggested by Bekenstein in 2004. I will review several features of TeVeS, among them black holes, the cosmological evolution of fundamental constants, its PPN parameters which show it to be indiscernible from GR in the solar system and the unusual behavior of gravitational waves in its framework, which can be traced back to the theory's MOND origin.