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Modeling dynamical ejecta from binary neutron star mergers and implications for electromagnetic counterparts

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arxiv 1612.03665 v1 pith:JBK5PUSM submitted 2016-12-12 gr-qc astro-ph.HE

Tim Dietrich , Maximiliano Ujevic This is my paper · ORCID
classification gr-qcastro-ph.HE
keywords approximatebinarycounterpartsdynamicalejectaelectromagneticfitskilonovae
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In addition to the emission of gravitational waves (GWs) the coalescence and merger of two neutron stars will produce a variety of electromagnetic (EM) signals. In this work we combine a large set of numerical relativity simulations performed by different groups and we present fits for the mass, kinetic energy, and the velocities of the dynamical ejected material. Additionally, we comment on the geometry and composition of the ejecta and discuss the influence of the stars' individual rotation. The derived fits can be used to approximate the luminosity and lightcurve of the kilonovae (macronovae) and to estimate the main properties of the radio flares. This correlation between the binary parameters and the EM signals allows in case of a GW detection to approximate possible EM counterparts when first estimates of the masses are available. After a possible kilonovae observation our results could also be used to restrict the region of the parameter space which has to be covered by numerical relativity simulations.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 156 citations worldwide. Full citation record

  1. nmma: An extended Bayesian framework for Nuclear Multimessenger Astronomy in the Era of Next-Generation Detectors

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    nmma now jointly samples nuclear EoS parameters with GW and EM data via TOV emulators and Fiesta surrogates, delivering 20–60× speedups and future H0–nuclear constraints.

  2. Simulating Binary Neutron Stars with Hybrid Equation of States: Gravitational Waves, Electromagnetic Signatures, and Challenges for Numerical Relativity

    gr-qc 2019-08 conditional novelty 6.0 of 10

    Numerical relativity simulations of a GW170817-like binary neutron star merger with strange quark matter cores show that strong phase transitions reduce convergence order to first order at insufficient resolution, yet...

  3. Unequal Mass Binary Neutron Star Simulations with Neutrino Transport: Ejecta and Neutrino Emission

    gr-qc 2019-08 conditional novelty 6.0 of 10

    New simulations of unequal-mass neutron star mergers find that only the softest equation of state ejects more than 0.01 solar masses of dynamical ejecta, and that ejecta speed and electron fraction drop as the mass ra...

  4. Prospect for Detection of Strongly Lensed Multi-messenger Signals of Binary Neutron Star Mergers

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

    Future CE+ET detectors may detect lensed BNS kilonovae at ~0.5/yr via pointed follow-up of known galaxy lenses, while lensed sGRBs and afterglows remain rare or undetectable with current-generation facilities.

  5. Toward a Unified Understanding of the Dense Matter Equation of State

    nucl-th 2025-11 conditional novelty 2.0 of 10

    A review of three Bayesian/computational frameworks for combining heavy-ion and astrophysical constraints on the dense-matter equation of state, plus a proposed unified integration workflow.

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