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  Dynamical evolution of fermion-boson stars

Valdez-Alvarado, S., Palenzuela, C., Alic, D., & Ureña-López, L. A. (2013). Dynamical evolution of fermion-boson stars. Physical Review D, 87: 084040. doi:10.1103/PhysRevD.87.084040.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-77ED-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-543D-6
Genre: Journal Article

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1210.2299 (Preprint), 380KB
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 Creators:
Valdez-Alvarado, Susana, Author
Palenzuela, Carlos1, Author              
Alic, Daniela1, Author              
Ureña-López, L. Arturo, Author
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO
 Abstract: Compact objects, like neutron stars and white dwarfs, may accrete dark matter, and then be sensitive probes of its presence. These compact stars with a dark matter component can be modeled by a perfect fluid minimally coupled to a complex scalar field (representing a bosonic dark matter component), resulting in objects known as fermion-boson stars. We have performed the dynamical evolution of these stars in order to analyze their stability, and to study their spectrum of normal modes, which may reveal the amount of dark matter in the system. Their stability analysis shows a structure similar to that of an isolated (fermion or boson) star, with equilibrium configurations either laying on the stable or on the unstable branch. The analysis of the spectrum of normal modes indicates the presence of new oscillation modes in the fermionic part of the star, which result from the coupling to the bosonic component through the gravity.

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 Dates: 2012-10-0820132013
 Publication Status: Published in print
 Pages: 12 pages, 14 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1210.2299
DOI: 10.1103/PhysRevD.87.084040
 Degree: -

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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : Published for the American Physical Society by the American Institute of Physics
Pages: - Volume / Issue: 87 Sequence Number: 084040 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258