Effect of ultralight dark matter on compact binary mergers
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866918333118414848 |
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| author | Chakravarti, Kabir Acharya, Soham Chakraborty, Sumanta Sarkar, Sudipta |
| author_facet | Chakravarti, Kabir Acharya, Soham Chakraborty, Sumanta Sarkar, Sudipta |
| contents | The growing catalogue of gravitational wave events enables a statistical analysis of compact binary mergers, typically quantified by the merger rate density. This quantity can be influenced by ambient factors, following which, in this work we have investigated the impact of dark matter environment on the merger statistics. We construct a baseline astrophysical model of compact binary mergers and extend it by incorporating a model of ultra light dark matter, which affects the orbital evolution of binaries through accretion and dynamical friction. Our analysis of the merged population of binary progenitors demonstrates that, compared to the baseline model, ULDM can significantly alter the merger statistics when its ambient density becomes larger than 104GeV/cm3. A comparison with the gravitational wave data from the GWTC-3 catalogue provides insight into potential observational signatures of the ULDM in merger events, leading to possible constraints on the existence and density of dark matter distribution in galaxies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_19660 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Effect of ultralight dark matter on compact binary mergers Chakravarti, Kabir Acharya, Soham Chakraborty, Sumanta Sarkar, Sudipta General Relativity and Quantum Cosmology Astrophysics of Galaxies High Energy Physics - Theory The growing catalogue of gravitational wave events enables a statistical analysis of compact binary mergers, typically quantified by the merger rate density. This quantity can be influenced by ambient factors, following which, in this work we have investigated the impact of dark matter environment on the merger statistics. We construct a baseline astrophysical model of compact binary mergers and extend it by incorporating a model of ultra light dark matter, which affects the orbital evolution of binaries through accretion and dynamical friction. Our analysis of the merged population of binary progenitors demonstrates that, compared to the baseline model, ULDM can significantly alter the merger statistics when its ambient density becomes larger than 104GeV/cm3. A comparison with the gravitational wave data from the GWTC-3 catalogue provides insight into potential observational signatures of the ULDM in merger events, leading to possible constraints on the existence and density of dark matter distribution in galaxies. |
| title | Effect of ultralight dark matter on compact binary mergers |
| topic | General Relativity and Quantum Cosmology Astrophysics of Galaxies High Energy Physics - Theory |
| url | https://arxiv.org/abs/2503.19660 |