Relativistic SPH Calculations of Compact Binary Mergers
Frederic Rasio, Joshua Faber, Shiho Kobayashi, Pablo Laguna
TL;DR
This paper reviews recent advances in relativistic smoothed particle hydrodynamics simulations of compact binary mergers, highlighting how gravitational wave signals reveal properties of neutron stars and black holes.
Contribution
It provides a comprehensive overview of recent simulation results for neutron star and black hole-neutron star mergers using relativistic SPH methods.
Findings
Gravitational wave signals encode information about neutron star properties.
Black hole spin and mass ratio critically influence merger outcomes.
Simulations improve understanding of merger dynamics and gravitational wave emission.
Abstract
We review recent progress in understanding the hydrodynamics of compact binary mergers using relativistic smoothed particle hydrodynamics (SPH) codes. Recent results are discussed for both double neutron stars and black hole - neutron star binaries. The gravitational wave signals from these mergers contain a lot of information about the masses and radii of the stars and the equation of state of the neutron star fluid. For black hole - neutron star mergers, the final fate of the fluid and the gravitational wave emission depend strongly on the mass ratio and the black hole spin.
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Taxonomy
TopicsFluid Dynamics Simulations and Interactions · Pulsars and Gravitational Waves Research · Particle accelerators and beam dynamics