Secular Outflows from Long-Lived Neutron Star Merger Remnants
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866914776013078528 |
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| author | Radice, David Bernuzzi, Sebastiano |
| author_facet | Radice, David Bernuzzi, Sebastiano |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2310_09934 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Secular Outflows from Long-Lived Neutron Star Merger Remnants Radice, David Bernuzzi, Sebastiano High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology 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. |
| title | Secular Outflows from Long-Lived Neutron Star Merger Remnants |
| topic | High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2310.09934 |