{"title":"Isolated compact star RXJ1856.5 − 3754 in f(R,T) modified gravity in Tolman-Kuchowicz spacetime","authors":"Mayukh Bandyopadhyay , Ritabrata Biswas","doi":"10.1016/j.physleta.2024.129676","DOIUrl":null,"url":null,"abstract":"<div><p>Our main motive is to model and study the mass-radius relation of the specific isolated compact star <span><math><mi>R</mi><mi>X</mi><mi>J</mi><mn>1856.5</mn><mo>−</mo><mn>3754</mn></math></span> in the background of the late time accelerated Universe and to achieve the equation of state of the core matter under stable equilibrium in <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo></math></span> modified gravity using Tolman-Kuchowicz metric potentials. Einstein-Hilbert action is taken as <span><math><mi>f</mi><mo>(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo>)</mo><mo>=</mo><mi>R</mi><mo>+</mo><mn>2</mn><mi>ξ</mi><mi>T</mi></math></span>, where <em>R</em> and <em>T</em> are the Ricci scalar and the trace of energy-momentum tensor respectively and <em>ξ</em> as coupling parameter. Modified Tolman-Oppenheimer-Volkoff equations are numerically solved by considering the presence of modified Chaplygin gas inside the star and also solving the corresponding field equations. We have got an explicit scenario of the structural evolution of isolated neutron stars through accelerating spacetime. Interestingly, all the derived outcomes of this investigation have become compatible with physically adopted regimes which reveal the physical viability of this current model.</p></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics Letters A","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0375960124003700","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
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Abstract
Our main motive is to model and study the mass-radius relation of the specific isolated compact star in the background of the late time accelerated Universe and to achieve the equation of state of the core matter under stable equilibrium in modified gravity using Tolman-Kuchowicz metric potentials. Einstein-Hilbert action is taken as , where R and T are the Ricci scalar and the trace of energy-momentum tensor respectively and ξ as coupling parameter. Modified Tolman-Oppenheimer-Volkoff equations are numerically solved by considering the presence of modified Chaplygin gas inside the star and also solving the corresponding field equations. We have got an explicit scenario of the structural evolution of isolated neutron stars through accelerating spacetime. Interestingly, all the derived outcomes of this investigation have become compatible with physically adopted regimes which reveal the physical viability of this current model.
期刊介绍：
Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.
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