Virialized Profiles and Oscillations of Self-interacting Fuzzy Dark Matter Solitons
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866909509740396544 |
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| author | Indjin, Milos Liu, I-Kang Proukakis, Nick P. Rigopoulos, Gerasimos |
| author_facet | Indjin, Milos Liu, I-Kang Proukakis, Nick P. Rigopoulos, Gerasimos |
| contents | We investigate the effect of self-interactions on the shape and oscillations of the solitonic core profile of condensed fuzzy dark matter systems without the backdrop of a halo, revealing universal features in terms of an appropriately scaled interaction strength characterizing the crossover between the weakly- and strongly-interacting regimes. Our semi-analytical results are further confirmed by spherically symmetric simulations of the Gross-Pitaevskii-Poisson equations. Inverting our obtained relations, we highlight a degeneracy that could significantly affect constraints on the boson mass in the presence of repulsive boson self-interactions and propose the simultaneous extraction of static and dynamical solitonic features as a way to uniquely constrain both the boson mass and self-interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_14917 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Virialized Profiles and Oscillations of Self-interacting Fuzzy Dark Matter Solitons Indjin, Milos Liu, I-Kang Proukakis, Nick P. Rigopoulos, Gerasimos Cosmology and Nongalactic Astrophysics We investigate the effect of self-interactions on the shape and oscillations of the solitonic core profile of condensed fuzzy dark matter systems without the backdrop of a halo, revealing universal features in terms of an appropriately scaled interaction strength characterizing the crossover between the weakly- and strongly-interacting regimes. Our semi-analytical results are further confirmed by spherically symmetric simulations of the Gross-Pitaevskii-Poisson equations. Inverting our obtained relations, we highlight a degeneracy that could significantly affect constraints on the boson mass in the presence of repulsive boson self-interactions and propose the simultaneous extraction of static and dynamical solitonic features as a way to uniquely constrain both the boson mass and self-interactions. |
| title | Virialized Profiles and Oscillations of Self-interacting Fuzzy Dark Matter Solitons |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2312.14917 |