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gr-qc2026
A discontinuous Galerkin method with artificial viscosity geared toward numerical relativity applications
Wolfgang Tichy, Ananya Adhikari, Faezeh Faghihnia Torshizi
Artificial viscosity can be used to deal with shocks and other discontinuities such as star surfaces, that can arise in matter. We explain in detail how a local discontinuous Galer…
gr-qc2026
Comparing twist-free axisymmetric gravitational waves near the black hole threshold
Ananya Adhikari, Tomáš Ledvinka, Daniela Cors +4
The threshold of black hole formation in axisymmetric vacuum gravity is proving to be more complicated than had been anticipated but, following recent advances, a consensus between…