Neutron star kicks plus rockets as a mechanism for forming wide low-eccentricity neutron star binaries
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917765167710208 |
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| author | Hirai, Ryosuke Podsiadlowski, Philipp Heger, Alexander Nagakura, Hiroki |
| author_facet | Hirai, Ryosuke Podsiadlowski, Philipp Heger, Alexander Nagakura, Hiroki |
| contents | Recent neutron star surface observations corroborate a long-standing theory that neutron stars may be accelerated over extended periods after their birth. We analyze how these prolonged rocket-like accelerations, combined with rapid birth kicks, impact binary orbits. We find that even a small contribution of rocket kicks combined with instantaneous natal kicks can allow binaries to reach period--eccentricity combinations unattainable in standard binary evolution models. We propose these kick + rocket combinations as a new channel to form wide low-eccentricity neutron star binaries such as Gaia NS1, as well as inducing stellar mergers months to years after a supernova to cause peculiar high-energy transients. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_20967 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Neutron star kicks plus rockets as a mechanism for forming wide low-eccentricity neutron star binaries Hirai, Ryosuke Podsiadlowski, Philipp Heger, Alexander Nagakura, Hiroki High Energy Astrophysical Phenomena Solar and Stellar Astrophysics Recent neutron star surface observations corroborate a long-standing theory that neutron stars may be accelerated over extended periods after their birth. We analyze how these prolonged rocket-like accelerations, combined with rapid birth kicks, impact binary orbits. We find that even a small contribution of rocket kicks combined with instantaneous natal kicks can allow binaries to reach period--eccentricity combinations unattainable in standard binary evolution models. We propose these kick + rocket combinations as a new channel to form wide low-eccentricity neutron star binaries such as Gaia NS1, as well as inducing stellar mergers months to years after a supernova to cause peculiar high-energy transients. |
| title | Neutron star kicks plus rockets as a mechanism for forming wide low-eccentricity neutron star binaries |
| topic | High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2407.20967 |