Pade approximants for truncated post-Newtonian neutron star models - art. no. 044038

Pade approximants to truncated post-Newtonian neutron star models are const ructed. The Pade models converge faster to the general relativistic (GR) so lution than the truncated post-Newtonian ones. The evolution of initial dat a using the Pade models approximates better the evolution of full GR initia l data than the truncated Taylor models. In the absence of full GR initial data (e.g., for neutron star binaries or black hole binary systems), Pade i nitial data could be a better option than the straightforward truncated pos t-Newtonian (Taylor) initial data.