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Premerger phenomena in neutron-star binary coalescences

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arxiv 2408.16283 v6 pith:YQLIENPY submitted 2024-08-29 astro-ph.HE gr-qchep-exhep-phhep-th

classification astro-ph.HEgr-qchep-exhep-phhep-th
keywords neutron-starbinarygamma-rayphenomenaprecursorspremergerastrophysicsbeen
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A variety of high-energy events can take place in the seconds leading up to a binary neutron-star merger. Mechanisms involving tidal resonances, electrodynamic interactions, or shocks in mass-loaded wakes have been proposed as instigators of these precursors. With a view of gravitational-wave and multimessenger astrophysics more broadly, premerger observations and theory are reviewed emphasising how gamma-ray precursors and dynamical tides can constrain the neutron-star equation of state, thermodynamic microphysics, and evolutionary pathways. Connections to post-merger phenomena, notably gamma-ray bursts, are discussed together with how magnetic fields, spin and misalignment, crustal elasticity, and stratification gradients impact observables.

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Cited by 5 Pith papers

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

  1. Effective-one-body model for coalescing binary neutron stars: Incorporating tidal spin and enhanced radiation from dynamical tides

    gr-qc 2025-01 conditional novelty 7.0 of 10

    A new EOB model for BNS/NSBH inspirals adds tidal-spin back-reaction and finite-frequency radiation corrections, yielding waveform phase shifts up to a few radians that previous effective Love number models miss.

  2. Assessing the Impact of Instrumental Requirements on the Scientific Performance of the Einstein Telescope

    astro-ph.IM 2026-07 accept novelty 6.0 of 10

    Degrading the Einstein Telescope's sensitivity in specific frequency bands hurts different science goals in predictable ways, but the mission remains scientifically strong even in the worst modelled cases.

  3. Magnetorotational instabilities in solids: Application to neutron-star crusts

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

    Plane-parallel analysis finds MRI operates in solids only when magnetic tension exceeds shear modulus, requiring spin frequencies ≳300 Hz for crust amplification in neutron-star mergers.

  4. The error budget of binary neutron star merger simulations for configurations with high spin

    gr-qc 2025-06 accept novelty 6.0 of 10

    For highly spinning (chi=0.5) binary neutron stars, evolution code choice is the largest numerical waveform error, and current analytical models disagree with numerical relativity beyond that error after the stars touch.

  5. Tidal deformation and strain accumulation of solid compact stars

    astro-ph.HE 2026-07 conditional novelty 5.5 of 10

    Solid strangeon stars of 1.4 Msun differ by ~40% in tidal deformability from fluid counterparts and release up to 10^46 erg via central-peaking strain fracture at hundreds of Hz.

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