Impact of Charge on Strange Compact Stars in Rastall Theory
Within the framework of Rastall theory, we investigate the impact of charge on the structural development of different types of spherically symmetric anisotropic stars. To do so, we present modified field equations based upon the Finch–Skea metric potentials expressed in terms of three parameters &l...
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| author | Malick Sallah Muhammad Sharif |
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| description | Within the framework of Rastall theory, we investigate the impact of charge on the structural development of different types of spherically symmetric anisotropic stars. To do so, we present modified field equations based upon the Finch–Skea metric potentials expressed in terms of three parameters <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>(</mo><mi>A</mi><mo>,</mo><mi>B</mi><mo>,</mo><mi>C</mi><mo>)</mo></mrow></semantics></math></inline-formula>. These constants are determined using suitable matching conditions and observational data for compact objects which include Her X-1, SAX J 1808.4-3658, PSR J038-0842, LMC X-4 and SMC X-1. The equation of state offered by the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="double-struck">MIT</mi></semantics></math></inline-formula> bag model for quark–gluon plasma is used to investigate the inner structure and other characteristics of these compact objects. For a fixed bag constant, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="script">B</mi><mo>=</mo><mn>60</mn><mspace width="3.33333pt"></mspace><msup><mrow><mi>MeV</mi><mo>/</mo><mi>fm</mi></mrow><mn>3</mn></msup></mrow></semantics></math></inline-formula>, and two sets of the Rastall and charge parameters, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>ζ</mi><mo>=</mo><mn>0.255</mn><mo>,</mo><mn>0.259</mn></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover accent="true"><mi mathvariant="script">Q</mi><mo stretchy="false">˜</mo></mover><mo>=</mo><mn>0.2</mn><mo>,</mo><mn>0.7</mn></mrow></semantics></math></inline-formula>, respectively, we analyze the consistency of the matter variables in the model and other physical parameters such as energy conditions, stellar mass, compactness, and surface redshift. In addition, we assess the stability of the constructed model through two different approaches. It is found that the obtained model is physically viable and stable. |
| format | Article |
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| institution | Kabale University |
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| spelling | doaj-art-44457d8ec0114f8a9bc5085d03d4bb832025-01-24T13:51:31ZengMDPI AGUniverse2218-19972025-01-011112510.3390/universe11010025Impact of Charge on Strange Compact Stars in Rastall TheoryMalick Sallah0Muhammad Sharif1Department of Mathematics and Statistics, The University of Lahore, 1-KM Defence Road, Lahore 54000, PakistanDepartment of Mathematics and Statistics, The University of Lahore, 1-KM Defence Road, Lahore 54000, PakistanWithin the framework of Rastall theory, we investigate the impact of charge on the structural development of different types of spherically symmetric anisotropic stars. To do so, we present modified field equations based upon the Finch–Skea metric potentials expressed in terms of three parameters <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>(</mo><mi>A</mi><mo>,</mo><mi>B</mi><mo>,</mo><mi>C</mi><mo>)</mo></mrow></semantics></math></inline-formula>. These constants are determined using suitable matching conditions and observational data for compact objects which include Her X-1, SAX J 1808.4-3658, PSR J038-0842, LMC X-4 and SMC X-1. The equation of state offered by the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="double-struck">MIT</mi></semantics></math></inline-formula> bag model for quark–gluon plasma is used to investigate the inner structure and other characteristics of these compact objects. For a fixed bag constant, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="script">B</mi><mo>=</mo><mn>60</mn><mspace width="3.33333pt"></mspace><msup><mrow><mi>MeV</mi><mo>/</mo><mi>fm</mi></mrow><mn>3</mn></msup></mrow></semantics></math></inline-formula>, and two sets of the Rastall and charge parameters, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>ζ</mi><mo>=</mo><mn>0.255</mn><mo>,</mo><mn>0.259</mn></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover accent="true"><mi mathvariant="script">Q</mi><mo stretchy="false">˜</mo></mover><mo>=</mo><mn>0.2</mn><mo>,</mo><mn>0.7</mn></mrow></semantics></math></inline-formula>, respectively, we analyze the consistency of the matter variables in the model and other physical parameters such as energy conditions, stellar mass, compactness, and surface redshift. In addition, we assess the stability of the constructed model through two different approaches. It is found that the obtained model is physically viable and stable.https://www.mdpi.com/2218-1997/11/1/25??? bag modelRastall theoryquark stars |
| spellingShingle | Malick Sallah Muhammad Sharif Impact of Charge on Strange Compact Stars in Rastall Theory Universe ??? bag model Rastall theory quark stars |
| title | Impact of Charge on Strange Compact Stars in Rastall Theory |
| title_full | Impact of Charge on Strange Compact Stars in Rastall Theory |
| title_fullStr | Impact of Charge on Strange Compact Stars in Rastall Theory |
| title_full_unstemmed | Impact of Charge on Strange Compact Stars in Rastall Theory |
| title_short | Impact of Charge on Strange Compact Stars in Rastall Theory |
| title_sort | impact of charge on strange compact stars in rastall theory |
| topic | ??? bag model Rastall theory quark stars |
| url | https://www.mdpi.com/2218-1997/11/1/25 |
| work_keys_str_mv | AT malicksallah impactofchargeonstrangecompactstarsinrastalltheory AT muhammadsharif impactofchargeonstrangecompactstarsinrastalltheory |