Post-Supernova Accretion of Light Elements onto a New-Born Neutron Star and NS 1987A
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866917098017521664 |
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| author | Baz-Pérez, Natalia de Jesús Page, Dany Guichandut, Simon Nava-Callejas, Martin Cavecchi, Yuri Cumming, Andrew |
| author_facet | Baz-Pérez, Natalia de Jesús Page, Dany Guichandut, Simon Nava-Callejas, Martin Cavecchi, Yuri Cumming, Andrew |
| contents | We model early accretion of light elements, He, C, and O, onto a new-born neutron star using the public stellar evolution code MESA, simulating what may happen during the first few years of its life. We find that, under the appropriate conditions, significant amounts of these elements can be accreted up to densities of 10^9 g/cc without triggering a nuclear explosion that would convert them into heavy elements. These results help to understand observations that favor light elements in the atmospheres of young cooling neutron stars, as the one found in the supernova remnant Cassiopeia A, and also add support to the recent indications for the presence of a neutron star, NS 1987A, in the remnant of SN 1987A. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2511_15913 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Post-Supernova Accretion of Light Elements onto a New-Born Neutron Star and NS 1987A Baz-Pérez, Natalia de Jesús Page, Dany Guichandut, Simon Nava-Callejas, Martin Cavecchi, Yuri Cumming, Andrew Solar and Stellar Astrophysics High Energy Astrophysical Phenomena Nuclear Theory We model early accretion of light elements, He, C, and O, onto a new-born neutron star using the public stellar evolution code MESA, simulating what may happen during the first few years of its life. We find that, under the appropriate conditions, significant amounts of these elements can be accreted up to densities of 10^9 g/cc without triggering a nuclear explosion that would convert them into heavy elements. These results help to understand observations that favor light elements in the atmospheres of young cooling neutron stars, as the one found in the supernova remnant Cassiopeia A, and also add support to the recent indications for the presence of a neutron star, NS 1987A, in the remnant of SN 1987A. |
| title | Post-Supernova Accretion of Light Elements onto a New-Born Neutron Star and NS 1987A |
| topic | Solar and Stellar Astrophysics High Energy Astrophysical Phenomena Nuclear Theory |
| url | https://arxiv.org/abs/2511.15913 |