A Pseudospectral Method for Gravitational Wave Collapse

Understand

We present a new pseudospectral code, bamps, for numerical relativity written with the evolution of collapsing gravitational waves in mind.

• We employ the first order generalized harmonic gauge formulation.
• The relevant theory is reviewed and the numerical method is critically examined and specialized for the task at hand.
• In particular we investigate formulation parameters, gauge and constraint preserving boundary conditions well-suited to non-vanishing gauge source functions.