School of Astronomy (SoA) - Weekly Seminar

Neutron stars and the cosmological constant problem

 By: Farbod Kamiab (University of Waterloo & Perimeter Institute )

Wednesday / 17-August-2011 / 26-Mordad-1390/ 2:00 PM

abstract:

The cosmological constant problem is one of the most important unsolved problems of modern physics. The gravitational aether theory is a modification of general relativity, that if true would solve the cosmological constant problem. The signature of the aether is distinguishable from general relativity only in high pressures and strong gravitational forces. The interior of neutron stars satisfies these conditions. After introducing the theory, I will talk about how solving the equations of stellar structure for neutron stars in the gravitational aether gives their mass-radius relation which can be compared with the mass-radius relation given by general relativity. I will also mention how this relation can enable tests of the validity of the aether theory in the light of current and future observational data ranging from the electromagnetic emissions of pulsars to the gravitational wave emissions of neutron stars in compact systems.

IPM Larak Garden - SoA  Building
Address: Larak Garden, opposite Araj, Artesh Highway,Tehran, Iran
E-mail: astro(at)ipm.ir