Durgapal IV model considering the minimal geometric deformation approach

作     者：Francisco Tello-Ortiz Ángel Rincon Piyali Bhar Y.Gomez-Leyton Francisco Tello-Ortiz;(A)ngel Rincón;Piyali Bhar;Y.Gomez-Leyton

作者机构：Departamento de FísicaFacultad de ciencias básicasUniversidad de AntofagastaCasilla 170AntofagastaChile Instituto de FísicaPontificia Universidad Católica de ValparaísoAvenida Brasil 2950Casilla 4059ValparaísoChile Department of MathematicsGovernment General Degree CollegeSingurHooghlyWest Bengal 712409India Departamento de FísicaUniversidad Católica del NorteAv.Angamos 0610AntofagastaChile 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2020年第44卷第10期

页      面：152-168页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 070201[理学-理论物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：CONICYT [PFCHA/DOCTORADO-NACIONAL/2020-21202056, PFCHA/DOCTORADO-NACIONAL/201921190856] Universidad de Antofagasta, Chile [ANT -1756, SEM 18 -02] DI-VRIEA through Proyecto Postdoctorado 2019 VRIEA-PUCV 

主　　题：compact objects anisotropy gravitational decoupling 

摘      要：The present article reports the study of local anisotropic effects on Durgapal s fourth model in the context of gravitational decoupling via the minimal geometric deformation *** achieve this,the most general equation of state relating the components of the−θsector is imposed to obtain the decoupler function f(r).In addition,certain properties of the obtained solution,such as the behavior of the salient material content threading the stellar interior;causality and energy conditions;hydrostatic balance through the modified Tolman−Oppenheimer−Volkoff conservation equation and stability mechanism against local anisotropies using the adiabatic index;sound velocity of the pressure waves;convection factor;and the Harrison−Zeldovich−Novikov procedure,are investigated to check whether the model is physically admissible or *** the stability analysis,it is found that the model presents unstable regions when the sound speed of the pressure waves and convection factor are used in distinction with the adiabatic index and Harrison−Zeldovich−Novikov *** produce a more realistic picture,the numerical data for some known compact objects were determined and different values of the parameterαwere considered to compare with the GR case,i.e.,α=0.