Boson stars with generic self-interactions

Details Boson stars with generic self-interactions Boson stars with generic self-interactions

1999-11-10

arxiv.org/abs/gr-qc/9911038v1

Int.J.Mod.Phys. D9 (2000) 601-618

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Revtex, 11 figures

Scientific paper

10.1142/S0218271800000608

We study boson star configurations with generic, but not non-topological, self-interaction terms, i.e. we do not restrict ourselves just to consider the standard $\lambda |\psi|^4$ interaction but more general U(1)-symmetry-preserving profiles. We find that when compared with the usual potential, similar results for masses and number of particles appear. However, changes are of order of few percent of the star masses. We explore the stability properties of the configurations, that we analyze using catastrophe theory. We also study possible observational outputs: gravitational redshifts, rotation curves of accreted particles, and lensing phenomena, and compare with the usual case.

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