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arXiv · 2408.16283

Premerger phenomena in neutron-star binary coalescences

Arthur G. Suvorov·Hao-Jui Kuan·Kostas D. Kokkotas
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Abstract

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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Arthur G. Suvorov, Hao-Jui Kuan, Kostas D. Kokkotas. 2024-08-29. Premerger phenomena in neutron-star binary coalescences. https://doi.org/10.3390/universe10120441

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