David Radice

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Recent work by McClarren & Hauck [31] suggests that the filtered spherical harmonics method represents an efficient, robust, and accurate method for radiation transport, at least in the two-dimensional (2D) case. We extend their work to the three-dimensional (3D) case and find that all of the advantages of the filtering approach identified in 2D are present(More)
We present fully general-relativistic simulations of binary neutron star mergers with a temperature and composition dependent nuclear equation of state. We study the dynamical mass ejection from both quasi-circular and dynamical-capture eccentric mergers. We systematically vary the level of our treatment of the microphysics to isolate the effects of(More)
Despite the recent rapid progress in numerical relativity, a convergence order less than the second has so far plagued codes solving the Einstein–Euler system of equations. We report simulations of the inspiral of binary neutron stars in quasi-circular orbits computed with a new code employing high-order, high-resolution shock-capturing, finite-differencing(More)
We report simulations of the inspiral and merger of binary neutron stars performed with WhiskyTHC, the first of a new generation of numerical relativity codes employing higher than second-order methods for both the spacetime and the hydrodynamic evolution. We find that the use of higher-order schemes improves substantially the quality of the gravitational(More)
We conduct a series of numerical experiments into the nature of three-dimensional (3D) hydrodynamics in the postbounce stalled-shock phase of core-collapse supernovae using 3D general-relativistic hydrodynamic simulations of a 27Me progenitor star with a neutrino leakage/heating scheme. We vary the strength of neutrino heating and find three cases of 3D(More)
Sebastiano Bernuzzi, David Radice, Christian D. Ott, Luke F. Roberts, Philipp Mösta, and Filippo Galeazzi DiFeST, University of Parma, and INFN, I-43124 Parma, Italy TAPIR, Walter Burke Institute for Theoretical Physics, California Institute of Technology, 1200 E California Boulevard, Pasadena, California 91125, USA Yukawa Institute for Theoretical Physics,(More)