An observationally derived kick distribution for neutron stars in binary systems
Understanding the natal kicks received by neutron stars (NSs) during formation is a critical component of modelling the evolution of massive binaries. Natal kicks are an integral input parameter for population synthesis codes, and have implications for the formation of double NS systems and their su...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
2023
|
| Online Access: | http://purl.org/au-research/grants/arc/CE170100004 http://hdl.handle.net/20.500.11937/96505 |
| _version_ | 1848766160803201024 |
|---|---|
| author | O’Doherty, Tyrone N. Bahramian, Arash Miller-Jones, James C. A. Goodwin, Adelle J. Mandel, I. Willcox, R. Atri, P. Strader, J. |
| author_facet | O’Doherty, Tyrone N. Bahramian, Arash Miller-Jones, James C. A. Goodwin, Adelle J. Mandel, I. Willcox, R. Atri, P. Strader, J. |
| author_sort | O’Doherty, Tyrone N. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Understanding the natal kicks received by neutron stars (NSs) during formation is a critical component of modelling the evolution of massive binaries. Natal kicks are an integral input parameter for population synthesis codes, and have implications for the formation of double NS systems and their subsequent merger rates. However, many of the standard observational kick distributions that are used are obtained from samples created only from isolated NSs. Kick distributions derived in this way overestimate the intrinsic NS kick distribution. For NSs in binaries, we can only directly estimate the effect of the natal kick on the binary system, instead of the natal kick received by the NS itself. Here, for the first time, we present a binary kick distribution for NSs with low-mass companions. We compile a catalogue of 145 NSs in low-mass binaries with the best available constraints on proper motion, distance, and systemic radial velocity. For each binary, we use a three-dimensional approach to estimate its binary kick. We discuss the implications of these kicks on system formation, and provide a parametric model for the overall binary kick distribution, for use in future theoretical modelling work. We compare our results with other work on isolated NSs and NSs in binaries, finding that the NS kick distributions fit using only isolated pulsars underestimate the fraction of NSs that receive low kicks. We discuss the implications of our results on modelling double NS systems, and provide suggestions on how to use our results in future theoretical works. |
| first_indexed | 2025-11-14T11:46:44Z |
| format | Journal Article |
| id | curtin-20.500.11937-96505 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:46:44Z |
| publishDate | 2023 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-965052025-01-14T01:21:22Z An observationally derived kick distribution for neutron stars in binary systems O’Doherty, Tyrone N. Bahramian, Arash Miller-Jones, James C. A. Goodwin, Adelle J. Mandel, I. Willcox, R. Atri, P. Strader, J. Understanding the natal kicks received by neutron stars (NSs) during formation is a critical component of modelling the evolution of massive binaries. Natal kicks are an integral input parameter for population synthesis codes, and have implications for the formation of double NS systems and their subsequent merger rates. However, many of the standard observational kick distributions that are used are obtained from samples created only from isolated NSs. Kick distributions derived in this way overestimate the intrinsic NS kick distribution. For NSs in binaries, we can only directly estimate the effect of the natal kick on the binary system, instead of the natal kick received by the NS itself. Here, for the first time, we present a binary kick distribution for NSs with low-mass companions. We compile a catalogue of 145 NSs in low-mass binaries with the best available constraints on proper motion, distance, and systemic radial velocity. For each binary, we use a three-dimensional approach to estimate its binary kick. We discuss the implications of these kicks on system formation, and provide a parametric model for the overall binary kick distribution, for use in future theoretical modelling work. We compare our results with other work on isolated NSs and NSs in binaries, finding that the NS kick distributions fit using only isolated pulsars underestimate the fraction of NSs that receive low kicks. We discuss the implications of our results on modelling double NS systems, and provide suggestions on how to use our results in future theoretical works. 2023 Journal Article http://hdl.handle.net/20.500.11937/96505 10.1093/mnras/stad680 http://purl.org/au-research/grants/arc/CE170100004 http://purl.org/au-research/grants/arc/FT190100574 http://purl.org/au-research/grants/arc/DP200102471 fulltext |
| spellingShingle | O’Doherty, Tyrone N. Bahramian, Arash Miller-Jones, James C. A. Goodwin, Adelle J. Mandel, I. Willcox, R. Atri, P. Strader, J. An observationally derived kick distribution for neutron stars in binary systems |
| title | An observationally derived kick distribution for neutron stars in binary systems |
| title_full | An observationally derived kick distribution for neutron stars in binary systems |
| title_fullStr | An observationally derived kick distribution for neutron stars in binary systems |
| title_full_unstemmed | An observationally derived kick distribution for neutron stars in binary systems |
| title_short | An observationally derived kick distribution for neutron stars in binary systems |
| title_sort | observationally derived kick distribution for neutron stars in binary systems |
| url | http://purl.org/au-research/grants/arc/CE170100004 http://purl.org/au-research/grants/arc/CE170100004 http://purl.org/au-research/grants/arc/CE170100004 http://hdl.handle.net/20.500.11937/96505 |