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Evolving black hole-neutron star binaries in general relativity using pseudospectral and finite difference methods

Duez, Matthew D. and Foucart, Francois and Kidder, Lawrence E. and Pfeiffer, Harald P. and Scheel, Mark A. and Teukolsky, Saul A. (2008) Evolving black hole-neutron star binaries in general relativity using pseudospectral and finite difference methods. Physical Review D, 78 (10). Art. No. 104015. ISSN 2470-0010. doi:10.1103/PhysRevD.78.104015.

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We present a code for solving the coupled Einstein-hydrodynamics equations to evolve relativistic, self-gravitating fluids. The Einstein field equations are solved in generalized harmonic coordinates on one grid using pseudospectral methods, while the fluids are evolved on another grid using shock-capturing finite difference or finite volume techniques. We show that the code accurately evolves equilibrium stars and accretion flows. Then we simulate an equal-mass nonspinning black hole-neutron star binary, evolving through the final four orbits of inspiral, through the merger, to the final stationary black hole. The gravitational waveform can be reliably extracted from the simulation.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Duez, Matthew D.0000-0002-0050-1783
Foucart, Francois0000-0003-4617-4738
Kidder, Lawrence E.0000-0001-5392-7342
Pfeiffer, Harald P.0000-0001-9288-519X
Teukolsky, Saul A.0000-0001-9765-4526
Additional Information:© 2008 The American Physical Society. (Received 29 August 2008; published 13 November 2008) We thank Francois Limousin and Manuel Tiglio for useful discussions. This work was supported in part by grants from the Sherman Fairchild Foundation to Caltech and Cornell and from the Brinson Foundation to Caltech; by NSF Grants No. PHY-0601459, No. PHY-0652995, No. DMS-0553302 and NASA Grant No. NNG05GG52G at Caltech; by NSF Grants No. PHY-0652952, No. DMS-0553677, No. PHY-0652929, and NASA Grant No. NNG05GG51G at Cornell. This research was supported in part by the NSF through TeraGrid [75] resources provided by LONI’s Queen Bee cluster. Computations were also performed on Caltech’s Shared Heterogeneous Cluster (SHC).
Funding AgencyGrant Number
Sherman Fairchild FoundationUNSPECIFIED
Brinson FoundationUNSPECIFIED
Issue or Number:10
Classification Code:PACS numbers:, 04.30.Db, 04.40.Dg, 47.75.+f
Record Number:CaltechAUTHORS:DUEprd08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12389
Deposited By: Archive Administrator
Deposited On:15 Nov 2008 00:25
Last Modified:08 Nov 2021 22:28

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