{"title":"Some new models for anisotropic strange star with a prescribed form of metric potential $$g_{rr}$$","authors":"R. Tamta, P. Fuloria, P. Tamta","doi":"10.1007/s12648-024-03252-x","DOIUrl":null,"url":null,"abstract":"<p>In this paper, we generate the anisotropic strange star models using a new form of metric potential. We determine the another metric coefficient by assuming a suitable form of anisotropy function, in such a way that both are free from any kind of singularities. We analyze the thermodynamic physical variables and geometric features extensively for the compact stars SMC X-4, LMC X-4. The trends of all the variables are well defined and physically acceptable. The masses and radii of the stellar objects SMCX-4, LMCX-4 are in close agreement with the available known parameters. The interior spacetime metric is to be matched with the Schwarzschild Vacuum Solution to ascertain the constant parameters. The adiabatic index exhibits physically reasonable trend and exceeds 4/3 throughout inside the compact fluid spheres. The stability of stellar models is analyzed via Herrera’s cracking concept and Harrison–Zel’dovich–Novikov criterion. The causality condition is well obeyed by the proposed stellar models. The TOV equation for the equilibrium of the fluid spheres is properly maintained inside the stellar models.</p>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s12648-024-03252-x","RegionNum":4,"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}
引用次数: 0
Abstract
In this paper, we generate the anisotropic strange star models using a new form of metric potential. We determine the another metric coefficient by assuming a suitable form of anisotropy function, in such a way that both are free from any kind of singularities. We analyze the thermodynamic physical variables and geometric features extensively for the compact stars SMC X-4, LMC X-4. The trends of all the variables are well defined and physically acceptable. The masses and radii of the stellar objects SMCX-4, LMCX-4 are in close agreement with the available known parameters. The interior spacetime metric is to be matched with the Schwarzschild Vacuum Solution to ascertain the constant parameters. The adiabatic index exhibits physically reasonable trend and exceeds 4/3 throughout inside the compact fluid spheres. The stability of stellar models is analyzed via Herrera’s cracking concept and Harrison–Zel’dovich–Novikov criterion. The causality condition is well obeyed by the proposed stellar models. The TOV equation for the equilibrium of the fluid spheres is properly maintained inside the stellar models.
期刊介绍:
Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.