Center of Mass and Spin for compact objects

CARLOS KOZAMEH

Córdoba

Conferencia; Cosmo Sur III; 2015

Local Organzing Committee

Interacting bodies produce gravitational waves (1916, Einstein) which carry away energy, momentum and angular momentum.We now know what is meant by gravitational radiation and how to relate to the motion of the sources.In this we address the issue of defining center of mass and spin for compact objects via a generalization of the mass-dipole/angular momentum two form in Minkowski space.These definitions rely on the asymptotic behaviour of the Weyl tensor and a one parameter family of NU cuts at Null Infinity.We also derive evolution equations for these variables