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Fermion-charged-boson stars
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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.
Forward citations
Cited by 2 Pith papers
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Rotating Fermion-Boson Stars in $R$-squared Gravity
R-squared gravity enlarges the equilibrium domain of rotating fermion-boson stars and raises static and Keplerian maximum masses relative to GR while remaining compatible with current compact-object constraints.
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Testing bosonic dark matter through white dwarf mass measurements
Adding a bosonic dark-matter core to white dwarf models reproduces the observed electromagnetic-vs-redshift mass discrepancies and the data favor a boson mass near 10^-10 eV.
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