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- David Radice, Ernazar Abdikamalov, Luciano Rezzolla, Christian D. Ott
- J. Comput. Physics
- 2013

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 consider the evolution in full general relativity of a family of linearly unstable isolated spherical neutron stars under the effects of very small perturbations as induced by the truncation error. Using a simple idealfluid equation of state, we find that this system exhibits a type I critical behaviour, thus confirming the conclusions reached by… (More)

We consider the head-on collision of equal-mass neutron stars boosted towards each other and we study the behaviour of such systems near the threshold of black-hole formation. In particular, we confirm the previous findings by Jin K J et al (2007 Phys. Rev. Lett 98 131101) that a type I critical phenomenon can be observed by fine-tuning the initial mass of… (More)

- Ernazar Abdikamalov, Christian D. Ott, +6 authors Erik Schnetter
- 2014

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)

- David Radice
- L' Information dentaire
- 1974

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)

- David Radice
- Science & recherche odontostomatologiques
- 1971