1303.6969 (J. Winicour)

The affine-null metric formulation of Einstein's equations    [PDF]

J. Winicour

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.

View original: http://arxiv.org/abs/1303.6969