R-process Nucleosynthesis of Subminimal Neutron Star Explosions
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 ∼4500 isotopes to study the nucleosynthesis and neutrino emission during the explosion. An electron antineutrino burst with...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/acf570 |
| _version_ | 1797660220761047040 |
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| author | Chun-Ming Yip Ming-Chung Chu Shing-Chi Leung Lap-Ming Lin |
| author_facet | Chun-Ming Yip Ming-Chung Chu Shing-Chi Leung Lap-Ming Lin |
| author_sort | Chun-Ming Yip |
| collection | DOAJ |
| description | 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 ∼4500 isotopes to study the nucleosynthesis and neutrino emission during the explosion. An electron antineutrino burst with a peak luminosity of ∼3 × 10 ^50 erg s ^−1 is emitted while the ejecta is heated to ∼10 ^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. |
| first_indexed | 2024-03-11T18:26:39Z |
| format | Article |
| id | doaj.art-19eea3438c684405ba72217da76654f9 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-11T18:26:39Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-19eea3438c684405ba72217da76654f92023-10-13T16:17:11ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-01956211510.3847/1538-4357/acf570R-process Nucleosynthesis of Subminimal Neutron Star ExplosionsChun-Ming Yip0https://orcid.org/0000-0002-3311-5387Ming-Chung Chu1https://orcid.org/0000-0002-1971-0403Shing-Chi Leung2https://orcid.org/0000-0002-4972-3803Lap-Ming Lin3https://orcid.org/0000-0002-4638-5044Department of Physics and Institute of Theoretical Physics, The Chinese University of Hong Kong , Shatin, N.T., Hong Kong S.A.R., People’s Republic of ChinaDepartment of Physics and Institute of Theoretical Physics, The Chinese University of Hong Kong , Shatin, N.T., Hong Kong S.A.R., People’s Republic of ChinaDepartment of Mathematics and Physics, SUNY Polytechnic Institute , 100 Seymour Road, Utica, NY 13502, USADepartment of Physics and Institute of Theoretical Physics, The Chinese University of Hong Kong , Shatin, N.T., Hong Kong S.A.R., People’s Republic of ChinaWe 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 ∼4500 isotopes to study the nucleosynthesis and neutrino emission during the explosion. An electron antineutrino burst with a peak luminosity of ∼3 × 10 ^50 erg s ^−1 is emitted while the ejecta is heated to ∼10 ^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.https://doi.org/10.3847/1538-4357/acf570Neutron starsHydrodynamical simulationsNeutrino astronomyR-processSolar abundances |
| spellingShingle | Chun-Ming Yip Ming-Chung Chu Shing-Chi Leung Lap-Ming Lin R-process Nucleosynthesis of Subminimal Neutron Star Explosions The Astrophysical Journal Neutron stars Hydrodynamical simulations Neutrino astronomy R-process Solar abundances |
| title | R-process Nucleosynthesis of Subminimal Neutron Star Explosions |
| title_full | R-process Nucleosynthesis of Subminimal Neutron Star Explosions |
| title_fullStr | R-process Nucleosynthesis of Subminimal Neutron Star Explosions |
| title_full_unstemmed | R-process Nucleosynthesis of Subminimal Neutron Star Explosions |
| title_short | R-process Nucleosynthesis of Subminimal Neutron Star Explosions |
| title_sort | r process nucleosynthesis of subminimal neutron star explosions |
| topic | Neutron stars Hydrodynamical simulations Neutrino astronomy R-process Solar abundances |
| url | https://doi.org/10.3847/1538-4357/acf570 |
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