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Exact Mass Conservation in Binary Neutron Star Merger Simulations
Boris Daszuta, Sebastiano Bernuzzi, Joan Fontbuté +4
A long-standing problem in the simulation of neutron star spacetimes is the treatment of vacuum regions outside the stars. The use of an artificial low-density atmosphere is a comm…
Performance-Portable Numerical Relativity with AthenaK
Hengrui Zhu, Jacob Fields, Francesco Zappa +6
We present the numerical relativity module within AthenaK, an open source performance-portable astrophysics code designed for exascale computing applications. This module employs t…
Numerical relativity simulations of compact binaries: comparison of cell- and vertex-centered adaptive meshes
Boris Daszuta, William Cook, Peter Hammond +4
Given the compact binary evolution problem of numerical relativity, in the finite-difference, block-based, adaptive mesh refinement context, choices must be made on how evolved fie…