Anisotropic stars in 4D Einstein-Gauss-Bonnet gravity
Primer Autor |
Banerjee, Ayan
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Co-autores |
Panotopoulos, Grigoris
Tangphati, Takol
Pradhan, Anirudh
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Título |
Anisotropic stars in 4D Einstein-Gauss-Bonnet gravity
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Editorial |
ELSEVIER
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Revista |
PHYSICS OF THE DARK UNIVERSE
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Lenguaje |
en
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Resumen |
The current trend concerning dense matter physics at sufficiently high densities and low temperatures is expected to behave as a degenerate Fermi gas of quarks forming Cooper pairs, namely a color superconductor, in the core of compact objects. In this context, we study the anisotropy of quark stars (QSs) assuming the internal composition to be comprised of homogeneous, charge neutral 3-flavor interacting quark matter with O(m(s)(4)) corrections. Using the equation of state (EoS) with the Tolman-Oppenheimer-Volkoff (TOV) structure equations, we perform numerical calculation for quark stars and determine the maximum mass-radius relation in the context of 4D Einstein-Gauss-Bonnet (EGB) gravity. In particular, we consider the effects of Gauss-Bonnet (GB) coupling constant on the diagrams related to mass-radius (M - R) relation and the mass-central mass density (M - rho(c)) relation of QSs. We pay particular attention to the influence of the anisotropy in the equilibrium and stability of strange stars. We also study the other properties of QSs related to compactness and binding energy. Interestingly, our result provides circumstantial evidence in favor of super-massive pulsars in 4D EGB gravity. (C) 2021 Elsevier B.V. All rights reserved.
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Fecha Publicación |
2021
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Tipo de Recurso |
artículo original
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Derecho de Acceso |
acceso abierto
metadata
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Description |
We wish to thank the anonymous reviewer for comments and suggestions. The author T. T would like to thank the financial support from the Science Achievement Scholarship of Thailand (SAST) . A. Pradhan thanks to IUCCA, Pune, India for providing fa-cilities under associateship programmes. The author G. P. thanks the FundacAo para a Ciencia e Tecnologia (FCT) , Portugal, for the financial support to the Center for Astrophysics and Gravitation-CENTRA, Chile, Instituto Superior Tecnico, Universidade de Lis-boa, Portugal, through the Project No. UIDB/00099/2020 and No. PTDC/FIS-AST/28920/2017.
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doi |
10.1016/j.dark.2021.100877
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Formato Recurso |
PDF
pdf
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Palabras Claves |
Quark star
4D EGB gravity
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Ubicación del archivo | |
Categoría OCDE |
Astronomía y Astrofísica
Astronomía y Astrofísica:
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Materias |
estrella de quarks
Gravedad EGB 4D
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Disciplinas de la OCDE |
Astronomía
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Id de Web of Science |
WOS:000704383100020
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Access Rights |
metadata
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Derechos de acceso |
metadata
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Identificador del recurso (Mandatado-único) |
artículo original
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Versión del recurso (Recomendado-único) |
versión publicada
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versión publicada | |
Tipo de ruta |
verde
hibrida
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Categoría WOS |
Astronomía y Astrofísica
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Descripción |
We wish to thank the anonymous reviewer for comments and suggestions. The author T. T would like to thank the financial support from the Science Achievement Scholarship of Thailand (SAST) . A. Pradhan thanks to IUCCA, Pune, India for providing fa-cilities under associateship programmes. The author G. P. thanks the FundacAo para a Ciencia e Tecnologia (FCT) , Portugal, for the financial support to the Center for Astrophysics and Gravitation-CENTRA, Chile, Instituto Superior Tecnico, Universidade de Lis-boa, Portugal, through the Project No. UIDB/00099/2020 and No. PTDC/FIS-AST/28920/2017.
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Referencia del Financiador (Mandatado si es aplicable-repetible) |
Science Achievement Scholarship of Thailand (SAST)
FCT UIDB/00099/2020
FCT PTDC/FIS-AST/28920/2017
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Formato |
pdf
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