Exploration of features in the black hole mass spectrum inspired by non-parametric analyses of gravitational wave observations
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866914079351767040 |
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| author | Rinaldi, Stefano Liang, Yajie Demasi, Gabriele Mapelli, Michela Del Pozzo, Walter |
| author_facet | Rinaldi, Stefano Liang, Yajie Demasi, Gabriele Mapelli, Michela Del Pozzo, Walter |
| contents | Current gravitational-wave data reveal structures in the mass function of binary compact objects. Properly modelling and deciphering such structures is the ultimate goal of gravitational-wave population analysis: in this context, non-parametric models are a powerful tool to infer the distribution of black holes from gravitational waves without committing to any specific functional form. Here, we aim to quantitatively corroborate the findings of non-parametric methods with parametrised models incorporating the features found in such analyses. We propose two modifications of the currently favoured PowerLaw+Peak model, inspired by non-parametric studies, and use them to analyse the third Gravitational Wave Transient Catalogue. Our analysis marginally supports the existence of two distinct, differently redshift-evolving subpopulations in the black hole primary mass function, and suggests that, to date, we are still unable to robustly assess the shape of the mass ratio distribution for symmetric ($q>0.7$) binaries. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_05929 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Exploration of features in the black hole mass spectrum inspired by non-parametric analyses of gravitational wave observations Rinaldi, Stefano Liang, Yajie Demasi, Gabriele Mapelli, Michela Del Pozzo, Walter High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Current gravitational-wave data reveal structures in the mass function of binary compact objects. Properly modelling and deciphering such structures is the ultimate goal of gravitational-wave population analysis: in this context, non-parametric models are a powerful tool to infer the distribution of black holes from gravitational waves without committing to any specific functional form. Here, we aim to quantitatively corroborate the findings of non-parametric methods with parametrised models incorporating the features found in such analyses. We propose two modifications of the currently favoured PowerLaw+Peak model, inspired by non-parametric studies, and use them to analyse the third Gravitational Wave Transient Catalogue. Our analysis marginally supports the existence of two distinct, differently redshift-evolving subpopulations in the black hole primary mass function, and suggests that, to date, we are still unable to robustly assess the shape of the mass ratio distribution for symmetric ($q>0.7$) binaries. |
| title | Exploration of features in the black hole mass spectrum inspired by non-parametric analyses of gravitational wave observations |
| topic | High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2506.05929 |