Secular Outflows from Long-Lived Neutron Star Merger Remnants

David Radice, Sebastiano Bernuzzi

Research output: Contribution to journalConference articlepeer-review


We study mass ejection from a binary neutron star merger producing a long-lived massive neutron star remnant with general-relativistic neutrino-radiation hydrodynamics simulations. In addition to outflows generated by shocks and tidal torques during and shortly after the merger, we observe the appearance of a wind driven by spiral density waves in the disk. This spiral-wave-driven outflow is predominantly located close to the disk orbital plane and have a broad distribution of electron fractions. At higher latitudes, a high electron-fraction wind is driven by neutrino radiation. The combined nucleosynthesis yields from all the ejecta components is in good agreement with Solar abundance measurements.

Original languageEnglish (US)
Article number012009
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 2024
Event15th International Conference on Numerical Modeling of Space Plasma Flows, ASTRONUM 2023 - Pasadena, United States
Duration: Jun 26 2023Jun 30 2023

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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