Constraints on Dark Matter Structures around Gaia Black Holes
Fuente:
arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908542980587520 |
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| author | Branco, Nuno P. Ferreira, Ricardo Z. Rosa, João G. Vicente, Rodrigo |
| author_facet | Branco, Nuno P. Ferreira, Ricardo Z. Rosa, João G. Vicente, Rodrigo |
| contents | We demonstrate that Gaia's detection of stars on wide orbits around black holes opens a new observational window on dark matter structures -- such as scalar clouds and dark matter spikes -- predicted in a range of theoretical scenarios. Using precise radial velocity measurements of these systems, we derive state-of-the-art constraints on dark matter density profiles and particle masses in previously unexplored regions of parameter space. We also test the black hole hypothesis against the alternative of a boson star composed of light scalar fields. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_13319 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Constraints on Dark Matter Structures around Gaia Black Holes Branco, Nuno P. Ferreira, Ricardo Z. Rosa, João G. Vicente, Rodrigo Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology We demonstrate that Gaia's detection of stars on wide orbits around black holes opens a new observational window on dark matter structures -- such as scalar clouds and dark matter spikes -- predicted in a range of theoretical scenarios. Using precise radial velocity measurements of these systems, we derive state-of-the-art constraints on dark matter density profiles and particle masses in previously unexplored regions of parameter space. We also test the black hole hypothesis against the alternative of a boson star composed of light scalar fields. |
| title | Constraints on Dark Matter Structures around Gaia Black Holes |
| topic | Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.13319 |