R-process Nucleosynthesis of Subminimal Neutron Star Explosions
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866918189239107584 |
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| author | Yip, Chun-Ming Chu, Ming-Chung Leung, Shing-Chi Lin, Lap-Ming |
| author_facet | Yip, Chun-Ming Chu, Ming-Chung Leung, Shing-Chi Lin, Lap-Ming |
| contents | We show that a minimum-mass neutron star undergoes delayed explosion after mass removal from its surface. We couple the Newtonian hydrodynamics to a nuclear reaction network of $\sim4500$ isotopes to study the nucleosynthesis and neutrino emission during the explosion. An electron antineutrino burst with a peak luminosity of $\sim3\times10^{50}$ erg s$^{-1}$ is emitted while the ejecta is heated to $\sim10^{9}$ K. A robust $r$-process nucleosynthesis is realized in the ejecta. Lanthanides and heavy elements near the second and third $r$-process peaks are synthesized as end products of nucleosynthesis, suggesting that subminimal neutron star explosions could be an important source of solar chemical elements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_14023 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | R-process Nucleosynthesis of Subminimal Neutron Star Explosions Yip, Chun-Ming Chu, Ming-Chung Leung, Shing-Chi Lin, Lap-Ming High Energy Astrophysical Phenomena We show that a minimum-mass neutron star undergoes delayed explosion after mass removal from its surface. We couple the Newtonian hydrodynamics to a nuclear reaction network of $\sim4500$ isotopes to study the nucleosynthesis and neutrino emission during the explosion. An electron antineutrino burst with a peak luminosity of $\sim3\times10^{50}$ erg s$^{-1}$ is emitted while the ejecta is heated to $\sim10^{9}$ K. A robust $r$-process nucleosynthesis is realized in the ejecta. Lanthanides and heavy elements near the second and third $r$-process peaks are synthesized as end products of nucleosynthesis, suggesting that subminimal neutron star explosions could be an important source of solar chemical elements. |
| title | R-process Nucleosynthesis of Subminimal Neutron Star Explosions |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2211.14023 |