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arXiv · 2307.02548

Piercing of a solitonic boson star by a black hole

Zhen Zhong·Vitor Cardoso·Taishi Ikeda·Miguel Zilhão
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Abstract

Recently, the piercing of a mini boson star by a black hole was studied, with tidal capture and the discovery of a "gravitational atom" being reported ( arXiv:2206.00021 [gr-qc] ). Building on this research, we extend the study by including a hexic solitonic potential and explore the piercing of a solitonic boson star by a black hole. Notably, the solitonic boson star can reach higher compactness, which one might expect could alter the dynamics in this context. Our findings suggest that even when the black hole's size approaches the test particle limit, the solitonic boson star is easily captured by the black hole due to an extreme tidal capture process. Regardless of the black hole initial mass and velocity, our results indicate that over 85% of the boson star material is accreted. Thus, the self-interaction does not alter the qualitative behavior of the system.

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Zhen Zhong, Vitor Cardoso, Taishi Ikeda, Miguel Zilhão. 2023-07-05. Piercing of a solitonic boson star by a black hole. https://doi.org/10.1103/physrevd.108.084051

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