Cauchy-characteristic Evolution of Einstein-Klein-Gordon Systems: The Black Hole Regime

Abstract

The Cauchy+characteristic matching (CCM) problem for the scalar wave equation is investigated in the background geometry of a Schwarzschild black hole. Previously reported work developed the CCM framework for the coupled Einstein-Klein-Gordon system of equations, assuming a regular center of symmetry. Here, the time evolution after the formation of a black hole is pursued, using a CCM formulation of the governing equations perturbed around the Schwarzschild background. An extension of the matching scheme allows for arbitrary matching boundary motion across the coordinate grid. As a proof of concept, the late time behavior of the dynamics of the scalar field is explored. The power-law tails in both the time-like and null infinity limits are verified.

To appear in Phys. Rev. D, 9 pages, revtex, 5 figures available at http://www.astro.psu.edu/users/nr/preprints.html

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Cited by in corpus (6)

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• Scalar field induced oscillations of neutron stars and gravitational collapse
• Matter flows around black holes and gravitational radiation
• Fully relativistic three-dimensional Cauchy-characteristic matching for physical degrees of freedom
• Characteristic Formulation for Metric $f(R)$ Gravity
• Bondian frames to couple matter with radiation