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Boson stars and their radial oscillations
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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.
Forward citations
Cited by 2 Pith papers
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Boson Stars in $D \ge 4$ Dimensions: Stability, Oscillation Frequencies, and Dynamical Evolutions
Self-interacting boson stars in D=5,6 and solitonic boson stars in D=5 can be radially stable, as shown by generalized pulsation equations and nonlinear spherical evolutions.
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Radial spectra and dynamical signatures of excited boson stars
For excited boson stars, the first zero of the fundamental radial mode matches the first critical point of mass, charge, and binding energy for all tested node numbers and self-interactions.
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