An implementation of the microphysics in full general relativity: a general relativistic neutrino leakage scheme

@article{Sekiguchi2010AnIO,
  title={An implementation of the microphysics in full general relativity: a general relativistic neutrino leakage scheme},
  author={Yuichiro Sekiguchi},
  journal={Classical and Quantum Gravity},
  year={2010},
  volume={27},
  pages={114107}
}
Performing fully general relativistic simulations taking account of microphysical processes (e.g. weak interactions and neutrino cooling) is one of the long-standing problems in numerical relativity. One of main difficulties in implementation of weak interactions in the general relativistic framework lies in the fact that the characteristic timescale of weak interaction processes (the WP timescale, ) in hot dense matters is much shorter than the dynamical timescale (tdyn). Numerically this… Expand

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References

SHOWING 1-10 OF 69 REFERENCES
Supernova simulations with Boltzmann neutrino transport: a comparison of methods
Accurate neutrino transport has been built into spherically symmetric simulations of stellar core collapse and postbounce evolution. The results of such simulations agree that spherically symmetricExpand
Stellar core collapse - Numerical model and infall epoch
A numerical model based on hydrodynamics coupled to radiation transport of all neutrino types is developed for calculating stellar core collapse. General relativistic hydrodynamic equations forExpand
Radiation hydrodynamics with neutrinos - Variable Eddington factor method for core-collapse supernova simulations
Neutrino transport and neutrino interactions in dense matter play a crucial role in stellar core collapse, supernova explosions and neutron star formation. Here we present a detailed description of aExpand
Relativistic simulations of rotational core collapse - II. Collapse dynamics and gravitational radiation
We have performed hydrodynamic simulations of relativistic rotational supernova core collapse in axisymmetry and have computed the gravitational radiation emitted by such an event. The EinsteinExpand
A Simple Parameterization of the Consequences of Deleptonization for Simulations of Stellar Core Collapse
A simple and computationally efficient parameterization of the deleptonization, the entropy changes, and the neutrino stress is presented for numerical simulations of stellar core collapse. TheExpand
A Finite Difference Representation of Neutrino Radiation Hydrodynamics in Spherically Symmetric General Relativistic Spacetime
We present an implicit finite difference representation for general relativistic radiation hydrodynamics in spherical symmetry. Our code, AGILE-BOLTZTRAN, solves the Boltzmann transport equation forExpand
Effects of General Relativity on the Mass Ejection of Neutrino-Trapping Supernovae
(Received May 17, ~984) The effects of neutrino trapping and general relativity (GR) on the mass ejection of supernovae are investigated on the assumption of adiabatic collapse with the aid of anExpand
A Generalized equation of state for hot, dense matter
Abstract An equation of state for hot, dense matter is presented in a form that is sufficiently rapid to use directly in hydrodynamical simulations, for example, in stellar collapse calculations. ItExpand
Theory of core-collapse supernovae
Advances in our understanding and the modeling of stellar core-collapse and supernova explosions over the past 15 years are reviewed, concentrating on the evolution of hydrodynamical simulations, theExpand
DELAYED NEUTRINO-DRIVEN SUPERNOVA EXPLOSIONS AIDED BY THE STANDING ACCRETION-SHOCK INSTABILITY
We present two-dimensional hydrodynamic simulations of stellar core collapse and develop the framework for a detailed analysis of the energetic aspects of neutrino-powered supernova explosions. OurExpand
...
1
2
3
4
5
...