http://arxiv.org/abs/1406.4224
We review the current status of compact object simulations that are based on the Smooth Particle Hydrodynamics (SPH) method. We begin by discussing relevant kernel approximation techniques and the choice of appropriate kernel functions. Subsequently, we review a number of different SPH discretizations of Newtonian, special- and general relativistic ideal fluid dynamics. In all of the above, we focus on recent numerical developments that can substantially improve the accuracy of SPH with respect to commonly used techniques. The second main part of this review is dedicated to an overview over the current status of selected astrophysical topics related to compact objects. We discuss in particular encounters between two white dwarfs, two neutron stars and between a neutron star and a stellar-mass black hole. For each type of system, the main focus is on gravitational wave-driven mergers of binary systems, but we also discuss dynamical collisions that may occur in dense stellar systems such as cores of globular clusters.
S. Rosswog
Wed, 18 Jun 14
40/71
Comments: Invited review submitted to Living Reviews in Computational Astrophysics; 105 pages; 21 figures
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