Head-On collisions of different initial data

Abstract

We discuss possible origins for discrepancies observed in the radiated energies in head-on collisions of non-spinning binaries starting from Brill-Lindquist and superposed Kerr-Schild data. For this purpose, we discuss the impact of different choices of gauge parameters and a small initial boost of the black holes.Comment: Proceedings of the Eleventh Marcel Grossmann Meeting; 3 pages (limit