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research article

Discontinuous Galerkin method for computing gravitational waveforms from extreme mass ratio binaries

Field, Scott E.
•
Hesthaven, Jan S.  
•
Lau, Stephen R.
2009
Classical and Quantum Gravity

Gravitational wave emission from extreme mass ratio binaries (EMRBs) should be detectable by the joint NASA-ESA LISA project, spurring interest in analytical and numerical methods for investigating EMRBs. We describe a discontinuous Galerkin (dG) method for solving the distributionally forced 1+1 wave equations which arise when modeling EMRBs via the perturbation theory of Schwarzschild black holes. Despite the presence of jump discontinuities in the relevant polar and axial gravitational `master functions', our dG method achieves global spectral accuracy, provided that we know the instantaneous position, velocity and acceleration of the small particle. Here these variables are known, since we assume that the particle follows a timelike geodesic of the Schwarzschild geometry. We document the results of several numerical experiments testing our method, and in our concluding section discuss the possible inclusion of gravitational self-force effects.

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Type
research article
DOI
10.1088/0264-9381/26/16/165010
Web of Science ID

WOS:000268630400011

Author(s)
Field, Scott E.
Hesthaven, Jan S.  
Lau, Stephen R.
Date Issued

2009

Publisher

IOP PUBLISHING LTD

Published in
Classical and Quantum Gravity
Volume

26

Issue

16

Article Number

165010,28

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
MCSS  
Available on Infoscience
November 12, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/96876
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