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dc.contributor.author
Alcubierre, Miguel
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Barranco, Juan
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Bernal, Argelia
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Degollado, Juan Carlos
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Diez Tejedor, Alberto
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Megevand Politano, Miguel Federico
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Núñez, Darío
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Sarbach, Olivier
dc.date.available
2021-02-24T17:45:15Z
dc.date.issued
2019-10
dc.identifier.citation
Alcubierre, Miguel; Barranco, Juan; Bernal, Argelia; Degollado, Juan Carlos; Diez Tejedor, Alberto; et al.; Dynamical evolutions of ℓ-boson stars in spherical symmetry; IOP Publishing; Classical and Quantum Gravity; 36; 21; 10-2019; 1-27; 215013
dc.identifier.issn
0264-9381
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http://hdl.handle.net/11336/126482
dc.description.abstract
In previous work, we have found new static, spherically symmetric boson star solutions which generalize the standard boson stars (BSs) by allowing a particular superposition of scalar fields in which each of the fields is characterized by a fixed value of its non-vanishing angular momentum number. We call such solutions 'boson stars'. Here, we perform a series of fully non-linear dynamical simulations of perturbed BSs in order to study their stability, and the final fate of unstable configurations. We show that for each value of, the configuration of maximum mass separates the parameter space into stable and unstable regions. Stable configurations, when perturbed, oscillate around the unperturbed solution and very slowly return to a stationary configuration. Unstable configurations, in contrast, can have three different final states: collapse to a black hole, migration to the stable branch, or explosion (dissipation) to infinity. Just as it happens with BSs, migration to the stable branch or dissipation to infinity depends on the sign of the total binding energy of the star: bound unstable stars collapse to black holes or migrate to the stable branch, whereas unbound unstable stars either collapse to a black hole or explode to infinity. Thus, the parameter allows us to construct a new set of stable configurations. All our simulations are performed in spherical symmetry, leaving a more detailed stability analysis including non-spherical perturbations for future work.
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application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
BOSON STARS
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CLASSICAL GENERAL RELATIVITY
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NUMERICAL RELATIVITY
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
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dc.title
Dynamical evolutions of ℓ-boson stars in spherical symmetry
dc.type
info:eu-repo/semantics/article
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info:ar-repo/semantics/artículo
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info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-19T21:24:23Z
dc.journal.volume
36
dc.journal.number
21
dc.journal.pagination
1-27; 215013
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Alcubierre, Miguel. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; México
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Fil: Barranco, Juan. Universidad de Guanajuato; México
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Fil: Bernal, Argelia. Universidad de Guanajuato; México
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Fil: Degollado, Juan Carlos. Universidad Nacional Autónoma de México; México
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Fil: Diez Tejedor, Alberto. Universidad de Guanajuato; México
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Fil: Megevand Politano, Miguel Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
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Fil: Núñez, Darío. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; México
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Fil: Sarbach, Olivier. Universidad Michoacana de San Nicolás de Hidalgo; México
dc.journal.title
Classical and Quantum Gravity
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1361-6382/ab4726
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info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/1361-6382/ab4726
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info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1906.08959
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