Orbiting binary black hole evolutions with a multipatch high order finite-difference approach

Creators: Pazos, Enrique; Tiglio, Manuel; Duez, Matthew D.; Kidder, Lawrence E.; Teukolsky, Saul A.

Abstract

We present numerical simulations of orbiting black holes for around 12 cycles, using a high order multipatch approach. Unlike some other approaches, the computational speed scales almost perfectly for thousands of processors. Multipatch methods are an alternative to adaptive mesh refinement, with benefits of simplicity and better scaling for improving the resolution in the wave zone. The results presented here pave the way for multipatch evolutions of black hole-neutron star and neutron star-neutron star binaries, where high resolution grids are needed to resolve details of the matter flow.

Additional Information

© 2009 The American Physical Society. Received 6 April 2009; published 21 July 2009. The numerical simulations presented here were performed using the Spectral Einstein Code (SpEC) developed at Caltech and Cornell primarily by L. Kidder, M. Scheel, and H. Pfeiffer. This research has been supported in part by NSF Grant No. PHY-0801213 to the University of Maryland, by NSF Grant Nos. PHY-0652952, DMS-0553677, and PHY-0652929 and by a grant from the Sherman Fairchild Foundation to Cornell, by the TeraGrid allocation TG-MCA02N014 to Louisiana State University, and by supercomputing resources at LONI. We thank O. Korobkin for his help on the early stages of this project.

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Published - PhysRevD.80.024027.pdf

Submitted - 0904.0493.pdf

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PhysRevD.80.024027.pdf

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