Fermion-charged-boson stars
arXiv:2108.01404 · doi:10.1103/PhysRevD.104.043001
Abstract
Fermion-boson stars are starlike systems composed of the ordinary nuclear matter of a neutron star and bosonic dark matter. The bosonic dark matter has typically been taken to be a complex scalar field. A natural extension is for the complex scalar field to be charged. We make the simplest extension and gauge the scalar field under U(1). We therefore study fermion-charged-boson stars. We make a detailed study of the stability of this system by computing critical curves over the whole of parameter space. We then study how the fermion and boson sectors contribute to the total mass of the star. Finally, we present mass-radius diagrams, showing that an increase in charge can lead to more massive and more compact stars.
arXiv comment11 pages, 6 figures
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- Dynamical Boson Stars
- Dynamical evolution of dark matter admixed neutron stars
- Can fermion-boson stars reconcile multi-messenger observations of compact stars?
- Dark Stars and Gravitational Waves: Topical Review
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