Pith. sign in

REVIEW 6 cited by

A Finite Difference Representation of Neutrino Radiation Hydrodynamics in Spherically Symmetric General Relativistic Space-Time

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv astro-ph/0207036 v3 pith:JOO7BQPJ submitted 2002-07-01 astro-ph

M. Liebendoerfer , O. E. B. Messer , A. Mezzacappa , S. W. Bruenn , C. Y. Cardall , F.-K. Thielemann This is my paper · ORCID
classification astro-ph
keywords evolutionfiniteneutrinosimulationssolarcasecodecollapse
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

We present an implicit finite difference representation for general relativistic radiation hydrodynamics in spherical symmetry. Our code, Agile-Boltztran, solves the Boltzmann transport equation for the angular and spectral neutrino distribution functions in self-consistent simulations of stellar core collapse and postbounce evolution. It implements a dynamically adaptive grid in comoving coordinates. Most macroscopically interesting physical quantities are defined by expectation values of the distribution function. We optimize the finite differencing of the microscopic transport equation for a consistent evolution of important expectation values. We test our code in simulations launched from progenitor stars with 13 solar masses and 40 solar masses. ~0.5 s after core collapse and bounce, the protoneutron star in the latter case reaches its maximum mass and collapses further to form a black hole. When the hydrostatic gravitational contraction sets in, we find a transient increase in electron flavor neutrino luminosities due to a change in the accretion rate. The muon- and tauon-neutrino luminosities and rms energies, however, continue to rise because previously shock-heated material with a non-degenerate electron gas starts to replace the cool degenerate material at their production site. We demonstrate this by supplementing the concept of neutrinospheres with a more detailed statistical description of the origin of escaping neutrinos. We compare the evolution of the 13 solar mass progenitor star to simulations with the MGFLD approximation, based on a recently developed flux limiter. We find similar results in the postbounce phase and validate this MGFLD approach for the spherically symmetric case with standard input physics.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Neutrino quantum kinetics for fast flavor conversion in a time-dependent environment

    astro-ph.HE 2026-08 unverdicted novelty 6.0 of 10

    Fast flavor conversion in a time-varying supernova background proceeds through three episodes and broadly agrees with static two-step model results.

  2. Strongly interacting matter with criticality induced by modified excluded volume in core-collapse supernova simulations

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    Modified-excluded-volume EOS with continuous van der Waals phase transition yields CCSN explosions and a several-millisecond neutrino burst, while the same EOS under Gibbs construction fails to explode.

  3. Disentangling axion-like particle couplings to nucleons via a delayed signal in Super-Kamiokande from a future supernova

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A future nearby supernova could reveal sub-MeV axion-like particles through a delayed ~30 MeV photon signal in Super-Kamiokande and Hyper-Kamiokande, probing couplings down to about 3 x 10^-6.

  4. Time integration for neutrino radiation transport using minimally implicit Runge-Kutta methods

    astro-ph.HE 2023-02 unverdicted novelty 6.0 of 10

    Minimally implicit Runge-Kutta methods enable stable, explicit-cost integration of neutrino-matter reaction equations in radiation hydrodynamics, tested on problems and core-collapse supernova simulations.

  5. Paleodetectors for neutrino signals from diverse Galactic stellar collapses

    astro-ph.HE 2026-07 conditional novelty 5.0 of 10

    Paleodetectors can reach burst-like Galactic core-collapse activity of several tens of supernovae at 10 pc, with sensitivity enhanced by high-mass NS and failed-SN neutrino emission that depends on the nuclear EOS.

  6. Parameterizing the Standing Accretion Shock Instability for Inference with Galactic Supernova Neutrino Signals at IceCube

    astro-ph.SR 2026-06 unverdicted novelty 5.0 of 10

    A parametrization of SASI is introduced that allows IceCube to identify the instability epoch and reconstruct its frequency, peak time, amplitude, and duration from Galactic supernova neutrino signals at sub-percent t...

Pith tools