Anisotropic stars in 4D Einstein-Gauss-Bonnet gravity

Primer Autor
Banerjee, Ayan
Co-autores
Panotopoulos, Grigoris
Tangphati, Takol
Pradhan, Anirudh
Título
Anisotropic stars in 4D Einstein-Gauss-Bonnet gravity
Editorial
ELSEVIER
Revista
PHYSICS OF THE DARK UNIVERSE
Lenguaje
en
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.
Fecha Publicación
2021
Tipo de Recurso
artículo original
Derecho de Acceso
acceso abierto
metadata
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.
doi
10.1016/j.dark.2021.100877
Formato Recurso
PDF
pdf
Palabras Claves
Quark star
4D EGB gravity
Ubicación del archivo
Categoría OCDE
Astronomía y Astrofísica
Astronomía y Astrofísica:
Materias
estrella de quarks
Gravedad EGB 4D
Disciplinas de la OCDE
Astronomía
Id de Web of Science
WOS:000704383100020
Access Rights
metadata
Derechos de acceso
metadata
Identificador del recurso (Mandatado-único)
artículo original
Versión del recurso (Recomendado-único)
versión publicada
versión publicada
Tipo de ruta
verde
hibrida
Categoría WOS
Astronomía y Astrofísica
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.
Referencia del Financiador (Mandatado si es aplicable-repetible)
Science Achievement Scholarship of Thailand (SAST)
FCT UIDB/00099/2020
FCT PTDC/FIS-AST/28920/2017
Formato
pdf
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