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Conformal thin-sandwich solver for generic initial data

Author(s): East, William E; Ramazanoglu, Fethi M; Pretorius, Frans

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Abstract: We present a new scheme for constructing initial data for the Einstein field equations using the conformal thin-sandwich formulation that does not assume conformal flatness or approximate Killing vectors. This includes a method for determining free data based on superposition, as well as a way to handle black hole singularities without excision. We numerically solve the constraint equations using a multigrid algorithm with mesh refinement. We demonstrate the efficacy of the method with initial data solutions for several applications: a quasicircular binary black hole merger, a dynamical capture black hole-neutron star merger, and an ultrarelativistic collision.
Publication Date: 15-Nov-2012
Electronic Publication Date: 27-Nov-2012
Citation: East, William E, Ramazanoglu, Fethi M, Pretorius, Frans. (2012). Conformal thin-sandwich solver for generic initial data. PHYSICAL REVIEW D, 86 (10.1103/PhysRevD.86.104053
DOI: doi:10.1103/PhysRevD.86.104053
ISSN: 2470-0010
EISSN: 2470-0029
Type of Material: Journal Article
Journal/Proceeding Title: PHYSICAL REVIEW D
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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