Affine-null metric formulation of Einstein's equations

作者:Winicour J*
来源:Physical Review D - Particles, Fields, Gravitation and Cosmology, 2013, 87(12): UNSP 124027.
DOI:10.1103/PhysRevD.87.124027

摘要

The details are presented of a new evolution algorithm for the characteristic initial-boundary value problem based upon an affine parameter rather than the areal radial coordinate used in the Bondi-Sachs formulation. The advantages over the Bondi-Sachs version are discussed, with particular emphasis on the application to the characteristic extraction of the gravitational waveform from Cauchy simulations of general relativistic astrophysical systems.

  • 出版日期2013-6-21