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gr-qc2024
A Tetrad-First Approach to Robust Numerical Algorithms in General Relativity
Jonathan Gorard, Ammar Hakim, James Juno +1
General relativistic Riemann solvers are typically complex, fragile and unwieldy, at least in comparison to their special relativistic counterparts. In this paper, we present a new…
gr-qc2024
General Relativistic Hydrodynamics in Discrete Spacetime: Perfect Fluid Accretion onto Static and Spinning Black Holes
Jonathan Gorard
We study the problem of a spherically-symmetric distribution of a perfect relativistic fluid accreting onto a (potentially spinning) black hole within a fully discrete spacetime se…