Boson stars and their radial oscillations
arXiv:2106.01740 · doi:10.1103/PhysRevD.103.123003
Abstract
We review the derivation of the pulsations equations for spherically symmetric boson stars and then make a thorough study of the radial oscillation frequencies for the fundamental and first excited modes. We do this for self-interacting boson stars and consider a range of values for the self-coupling constant. We also numerically evolve boson stars and Fourier transform the dynamic solutions. The Fourier transform gives an independent computation of the radial oscillation frequencies and allows us to verify our results obtained from the pulsation equations. We find excellent agreement between the two methods.
arXiv comment13 pages, 5 figures
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- Dynamical Boson Stars
- Boson Stars and Oscillatons: A Review
- Dynamical evolution of dark matter admixed neutron stars
- Fermion-charged-boson stars
- Dark Stars and Gravitational Waves: Topical Review
- Long-term stable nonlinear evolutions of ultracompact black-hole mimickers
- Dynamical evolution of fermion-boson stars with realistic equations of state
- Radial stability of spherical bosonic stars and critical points
- Assessing the stability of ultracompact spinning boson stars with nonlinear evolutions
- Bifurcations in Bosonic Stars: chains and rings from spherical solutions
- Detectability of Massive Boson Stars using Gravitational Waves from Fundamental Oscillations
- Mini boson stars in higher dimensions are radially unstable