{"title":"Physically viable and stable charged perfect fluid solution within F(Q) gravity","authors":"Jitendra Kumar , S.K. Maurya , Sourav Chaudhary , Abdelghani Errehymy , Kairat Myrzakulov , Zhanbala Umbetova","doi":"10.1016/j.dark.2024.101593","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, we investigate the physical behavior and stability of compact stars in <span><math><mrow><mi>F</mi><mrow><mo>(</mo><mi>Q</mi><mo>)</mo></mrow></mrow></math></span> gravity. We employ the Buchdahl metric to examine the dynamics of a relativistic, newly charged, isotropic fluid model. The interplay between gravity and electromagnetism is included in the analysis of the system by taking into account the charged state of the fluid, providing insights into how charged fluids behave in gravitational theories. The exterior solution under Schwarzschild–de Sitter (dS) spacetime is linked to the interior solution at the boundary to identify the constants. It is important to note that the Buchdahl ansatz provides a mathematically viable solution for a given transformation in the context of electric charge when pressure and density are maximum in the center and monotonically fall towards the boundary. We have taken into account the compact star Her X-1 with <span><math><mrow><mi>M</mi><mo>=</mo><mrow><mo>(</mo><mn>0</mn><mo>.</mo><mn>85</mn><mo>±</mo><mn>0</mn><mo>.</mo><mn>15</mn><mo>)</mo></mrow><msub><mrow><mi>M</mi></mrow><mrow><mo>⊙</mo></mrow></msub></mrow></math></span>; Radius <span><math><mrow><mo>=</mo><mn>13</mn><mo>.</mo><mn>2</mn><msubsup><mrow><mn>6</mn></mrow><mrow><mo>−</mo><mn>1</mn><mo>.</mo><mn>08</mn></mrow><mrow><mo>+</mo><mn>1</mn><mo>.</mo><mn>08</mn></mrow></msubsup></mrow></math></span> km for graphical analysis. In the context of <span><math><mrow><mi>F</mi><mrow><mo>(</mo><mi>Q</mi><mo>)</mo></mrow></mrow></math></span>, the physical acceptability of the model has been examined by looking at the required physical attributes, such as energy conditions, causality, hydrostatic equilibrium, pressure–density ratio, etc. that are satisfied throughout the stellar configuration. It is concluded that the present approach allows a suitable modeling of astrophysical compact objects in <span><math><mrow><mi>F</mi><mrow><mo>(</mo><mi>Q</mi><mo>)</mo></mrow></mrow></math></span> gravity.</p></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"46 ","pages":"Article 101593"},"PeriodicalIF":5.0000,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of the Dark Universe","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2212686424001754","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this work, we investigate the physical behavior and stability of compact stars in gravity. We employ the Buchdahl metric to examine the dynamics of a relativistic, newly charged, isotropic fluid model. The interplay between gravity and electromagnetism is included in the analysis of the system by taking into account the charged state of the fluid, providing insights into how charged fluids behave in gravitational theories. The exterior solution under Schwarzschild–de Sitter (dS) spacetime is linked to the interior solution at the boundary to identify the constants. It is important to note that the Buchdahl ansatz provides a mathematically viable solution for a given transformation in the context of electric charge when pressure and density are maximum in the center and monotonically fall towards the boundary. We have taken into account the compact star Her X-1 with ; Radius km for graphical analysis. In the context of , the physical acceptability of the model has been examined by looking at the required physical attributes, such as energy conditions, causality, hydrostatic equilibrium, pressure–density ratio, etc. that are satisfied throughout the stellar configuration. It is concluded that the present approach allows a suitable modeling of astrophysical compact objects in gravity.
期刊介绍:
Physics of the Dark Universe is an innovative online-only journal that offers rapid publication of peer-reviewed, original research articles considered of high scientific impact.
The journal is focused on the understanding of Dark Matter, Dark Energy, Early Universe, gravitational waves and neutrinos, covering all theoretical, experimental and phenomenological aspects.