Temperature-dependent axion mass fluctuations in early matter domination source order-unity axion overdensities by equality, yielding two distinct regions in the nonlinear spectrum and estimated minicluster masses.
Formation and mass growth of axion stars in axion miniclusters
5 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
We study the formation and the subsequent mass growth of axion stars inside axion miniclusters. Numerically solving the Schr\"odinger-Poisson equations with realistic initial conditions we find that the axion stars exhibit similar properties to solitonic cores in ultralight bosonic dark matter halos in terms of their radial density profiles and large-amplitude oscillations. A merger of two axion stars confirms a previously found empirical law for the mass of the merged axion star. Monitoring the axion star masses over time, we observe a mass growth consistent with the mass increase of Bose stars in the kinetic regime reported by Levkov et al., confirming that the mass evolution of axion stars can be understood in terms of wave condensation. Based on this result, we predict a saturation of mass growth in relation to the minicluster mass consistent with the core-halo mass relation previously found for ultra-light bosonic dark matter halos.
representative citing papers
Gravitationally condensed Proca stars are sizably but not maximally spin-polarized, with core spin set by random elliptical polarization of the dominant mode rather than a universal fraction.
The equilibrium radius of self-gravitating dark fermion stars is determined by the fermion mass once the total mass is given, with the Bohm potential supplying outward pressure for heavier species and inward tension for lighter ones.
Axion stars in miniclusters can reach bosenova conditions within the age of the Universe for QCD axions when initial overdensity exceeds roughly 100, once self-interaction effects are included.
citing papers explorer
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From Rags to Jeans: Axion Miniclusters from Early matter domination
Temperature-dependent axion mass fluctuations in early matter domination source order-unity axion overdensities by equality, yielding two distinct regions in the nonlinear spectrum and estimated minicluster masses.
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Spin Polarization of Proca Stars Formed by Gravitational Bose--Einstein Condensation
Gravitationally condensed Proca stars are sizably but not maximally spin-polarized, with core spin set by random elliptical polarization of the dominant mode rather than a universal fraction.
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Self-gravitating quantum stars with a globally relevant Bohm potential
The equilibrium radius of self-gravitating dark fermion stars is determined by the fermion mass once the total mass is given, with the Bohm potential supplying outward pressure for heavier species and inward tension for lighter ones.
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Axion Star Bosenova in Axion Miniclusters
Axion stars in miniclusters can reach bosenova conditions within the age of the Universe for QCD axions when initial overdensity exceeds roughly 100, once self-interaction effects are included.
- Yukawa-Screened Bose-Star Condensation