Repositorio UFRO · Omeka S

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	http://dx.doi.org/10.1016/j.dark.2021.100877
Categoría OCDE	Astronomía y Astrofísica Astronomía y Astrofísica:
Materias	estrella de quarks Gravedad EGB 4D
Disciplinas de la OCDE	Astronomía
Versión del recurso (Recomendado-único)	versión publicada
Tipo de ruta	hibrida verde
Access Rights	metadata
Derechos de acceso	metadata
Id de Web of Science	WOS:000704383100020
Identificador del recurso (Mandatado-único)	artículo original
versión publicada	Versión publicada
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