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arXiv · 2206.07715

Dynamical evolution of fermion-boson stars with realistic equations of state

Joseph E. Nyhan·Ben Kain
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Abstract

Fermion-boson stars are mixtures of the ordinary nuclear matter of a neutron star and bosonic dark matter. We dynamically evolve fermion-boson stars for the first time using a realistic equation of state for nuclear matter. We use our dynamical solutions to make a detailed study of the evolution of weakly and strongly perturbed static solutions. As examples of our findings, we identify a region of parameter space where weakly perturbed unstable static solutions migrate to a stable configuration and we determine the criteria under which strongly perturbed stable static solutions will always move to a stable configuration instead of collapsing to a black hole.

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Joseph E. Nyhan, Ben Kain. 2022-06-15. Dynamical evolution of fermion-boson stars with realistic equations of state. https://doi.org/10.1103/physrevd.105.123016

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