Head-On collisions of different initial data
Ulrich Sperhake, Bernd Bruegmann, Jose Gonzalez, Mark Hannam, Sascha, Husa
TL;DR
This paper investigates the causes of discrepancies in radiated energies during head-on black hole collisions, focusing on initial data choices, gauge parameters, and initial boosts.
Contribution
It analyzes how different initial data and gauge choices influence the observed radiated energies in black hole head-on collisions.
Findings
Discrepancies are linked to initial data and gauge choices.
Initial boosts affect the radiated energy measurements.
Different initial data formulations lead to varying energy outputs.
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.
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