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dc.contributor.author
Jaramillo, Victor
dc.contributor.author
Sanchis Gual, Nicolas
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Barranco, Juan
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Bernal, Argelia
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Degollado, Juan Carlos
dc.contributor.author
Herdeiro, Carlos
dc.contributor.author
Megevand Politano, Miguel Federico
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dc.contributor.author
Núñez, Darío
dc.date.available
2023-08-23T18:13:21Z
dc.date.issued
2022-05
dc.identifier.citation
Jaramillo, Victor; Sanchis Gual, Nicolas; Barranco, Juan; Bernal, Argelia; Degollado, Juan Carlos; et al.; Head-on collisions of ℓ -boson stars; American Physical Society; Physical Review D; 105; 10; 5-2022; 1-23
dc.identifier.issn
1550-7998
dc.identifier.uri
http://hdl.handle.net/11336/209124
dc.description.abstract
Fully nonlinear numerical evolutions of the Einstein-(multi)-Klein-Gordon equations are performed to study head-on collisions of -boson stars. Despite being spherically symmetric, -boson stars have a (hidden) frame of reference, used in defining their individual multipolar fields. To assess the impact of their relative orientation, we perform simulations with different angles between the axes of the two colliding stars. Additionally, two scenarios are considered for the colliding stars: that they are composites of either the same or different scalar fields. Despite some model-specific behaviors, the simulations generically indicate that (1) the collision of two sufficiently (and equally) massive stars leads to black hole formation; (2) below a certain mass threshold the end result of the evolution is a bound state of the composite scalar fields, that neither disperses nor collapses into a black hole within the simulation time; (3) this end product (generically) deviates from spherical symmetry and the equipartition of the number of bosonic particles between the different scalar fields composing the initial boson stars is lost, albeit not dramatically. This last observation indicates, albeit without being conclusive, that the end result of these collisions belongs to the previously reported larger family of equilibrium multifield boson stars, generically nonspherical, and of which -boson stars are a symmetry enhanced point. We also extract and discuss the waveforms from the collisions studied.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Boson star
dc.subject
Gravitational waves
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Compact objects
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Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Head-on collisions of ℓ -boson stars
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-07T21:39:06Z
dc.identifier.eissn
2470-0029
dc.journal.volume
105
dc.journal.number
10
dc.journal.pagination
1-23
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Jaramillo, Victor. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; México
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Fil: Sanchis Gual, Nicolas. Universidad de Valencia; España. Universidade de Aveiro; Portugal
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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
dc.description.fil
Fil: Herdeiro, Carlos. Universidade de Aveiro; Portugal
dc.description.fil
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
dc.description.fil
Fil: Núñez, Darío. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; México
dc.journal.title
Physical Review D
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.105.104057
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevD.105.104057
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