Toward fidelity and scalability in non-vacuum mergers

Abstract

We study the evolution of two fiducial configurations for binary neutron stars using two different general relativistic hydrodynamics (GRHD), distributed adaptive mesh codes. One code, Had, has for many years been used to study mergers of compact object binaries, while a new code, MHDuet, has been recently developed with the experience gained with the older one as well as several novel features for scalability improvements. As such, we examine the performance of each, placing particular focus on future requirements for the extraction of gravitational wave signatures of non-vacuum binaries.