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Turbulence modelling in neutron star merger simulations

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arxiv 2402.03224 v1 pith:ZRZRRMML submitted 2024-02-05 astro-ph.HE gr-qc

classification astro-ph.HEgr-qc
keywords neutronsimulationsstarmodellingturbulencecurrentdetailedmerger
verification ladder T0 review T1 audit T2 compute T3 formal

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Observations of neutron star mergers have the potential to unveil detailed physics of matter and gravity in regimes inaccessible by other experiments. Quantitative comparisons to theory and parameter estimation require nonlinear numerical simulations. However, the detailed physics of energy and momentum transfer between different scales, and the formation and interaction of small scale structures, which can be probed by detectors, are not captured by current simulations. This is where turbulence enters neutron star modelling. This review will outline the theory and current status of turbulence modelling for relativistic neutron star merger simulations.

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Cited by 2 Pith papers

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

  1. Transport Properties of the MRI in Differentially Rotating Neutron Stars

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

    Saturated MRI turbulence in differentially rotating neutron stars yields ℓ_mix ≈ (0.01–0.1) λ_MRI, largely independent of density, so standard GRLES mixing-length prescriptions overestimate transport by about an order...

  2. SPH methods in the modelling of compact objects

    astro-ph.HE 2026-07 conditional novelty 1.0 of 10

    An updated expert review of Newtonian and general-relativistic SPH for compact-object mergers, arguing that modern SPH variants with better kernels, steered dissipation and reproducing gradients match grid-based codes...

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