MG12 - Talk detail
 

Back to previous page

 Participant 

Institution

Session

Talk

Abstract

Modelling gravitational waves at large radii

I discuss the implementation of a new numerical relativity code which is designed towards high accuracy in the distant wave zone. The code makes use of a multi-block structure and coordinates adapted to the wavezone in order to place sufficient resolution to take measurements at $r=1000m$ and indeed resolve the waves to an outer boundary which is causally disconnected from the measurements. The increased time and space resolution of the wave zone, and the lack of artificial boundary effects, allow higher harmonics in the waves to be accurately measured. The asymptotic falloff of the waves and peeling property of the Weyl scalars can be evaluated at larger distances than previously, and can be used to determine the potential error from near zone extrapolations.

Back to previous page