Rotating Scalar Field and Formation of Bose Stars
Abstract
We study numerical evolutions of an initial cloud of self-gravitating bosonic dark matter with finite angular momentum and self-interaction in kinetic regime. It is demonstrated that such a system can undergo gravitational condensation and form a Bose star. The results show that the gravitational condensation time is strongly influenced by the presence of finite angular momentum or the strength of self-interaction. We find that in the cases related with attractive or no self-interaction, there is no significant transfer of angular momentum from the initial cloud to the formed star. However, for the case repulsive interaction our results indicate that such a angular-momentum transfer is possible. These results are consistent with the earlier analytical work where the stability of the rotating boson star was considered [Dmitriev et al. 2021].
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Cite
@article{arxiv.2109.02601,
title = {Rotating Scalar Field and Formation of Bose Stars},
author = {Kuldeep J. Purohit and Pravin Kumar Natwariya and Jitesh R. Bhatt and Prashant K. Mehta},
journal= {arXiv preprint arXiv:2109.02601},
year = {2022}
}
Comments
New results have been incorporated