Constraints on primordial black holes from the first part of LIGO-Virgo-KAGRA fourth observing run
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866909046540337152 |
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| author | Andrés-Carcasona, M. Iovino, A. J. Vallejo-Pagès, E. Vaskonen, V. Veermäe, H. Martínez, M. Mir, Ll. M. |
| author_facet | Andrés-Carcasona, M. Iovino, A. J. Vallejo-Pagès, E. Vaskonen, V. Veermäe, H. Martínez, M. Mir, Ll. M. |
| contents | We analyze PBH populations using state-of-the-art modeling of PBH binaries, deriving the strongest bounds on PBH abundance in the $0.6-100 M_\odot$ range from LIGO-Virgo-KAGRA O4a data and demonstrating sensitivity in the $10^{-4}-10^4 M_\odot$ range. The constraints are dominated by resolvable PBH mergers, while the associated gravitational wave background provides complementary but weaker limits. Allowing PBHs to account for a subset of the cataloged events slightly relaxes these bounds. However, a joint fit with astrophysical black holes shows no compelling evidence for a PBH contribution. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_15749 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Constraints on primordial black holes from the first part of LIGO-Virgo-KAGRA fourth observing run Andrés-Carcasona, M. Iovino, A. J. Vallejo-Pagès, E. Vaskonen, V. Veermäe, H. Martínez, M. Mir, Ll. M. Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology We analyze PBH populations using state-of-the-art modeling of PBH binaries, deriving the strongest bounds on PBH abundance in the $0.6-100 M_\odot$ range from LIGO-Virgo-KAGRA O4a data and demonstrating sensitivity in the $10^{-4}-10^4 M_\odot$ range. The constraints are dominated by resolvable PBH mergers, while the associated gravitational wave background provides complementary but weaker limits. Allowing PBHs to account for a subset of the cataloged events slightly relaxes these bounds. However, a joint fit with astrophysical black holes shows no compelling evidence for a PBH contribution. |
| title | Constraints on primordial black holes from the first part of LIGO-Virgo-KAGRA fourth observing run |
| topic | Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2605.15749 |