Physical characteristics and maximum allowable mass of hybrid star in the context of f(Q) gravity
Abstract In this study, we explore several new characteristics of a static anisotropic hybrid star with strange quark matter (SQM) and ordinary baryonic matter (OBM) distribution. Here, we use the MIT bag model equation of state to connect the density and pressure of SQM inside stars, whereas the li...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-07-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-11745-y |
| _version_ | 1797689074441519104 |
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| author | Piyali Bhar Sneha Pradhan Adnan Malik P. K. Sahoo |
| author_facet | Piyali Bhar Sneha Pradhan Adnan Malik P. K. Sahoo |
| author_sort | Piyali Bhar |
| collection | DOAJ |
| description | Abstract In this study, we explore several new characteristics of a static anisotropic hybrid star with strange quark matter (SQM) and ordinary baryonic matter (OBM) distribution. Here, we use the MIT bag model equation of state to connect the density and pressure of SQM inside stars, whereas the linear equation of state $$p_r =\alpha \rho -\beta $$ p r = α ρ - β connects the radial pressure and matter density caused by baryonic matter. The stellar model was developed under a background of f(Q) gravity using the quadratic form of f(Q). We utilized the Tolman–Kuchowicz ansatz (Tolman in Phys. Rev. 55:364–373, 1939; Kuchowicz in Acta Phys Pol 33: 541, 1968) to find the solutions to the field equations under modified gravity. We have matched the interior solution to the external Schwarzschild spacetime in order to acquire the numerical values of the model parameters. We have selected the star Her X-1 to develop various profiles of the model parameters. Several significant physical characteristics have been examined analytically and graphically, including matter densities, tangential and radial pressures, energy conditions, anisotropy factor, redshirt, compactness, etc. The main finding is that there is no core singularity present in the formations of the star under investigation. The nature of mass and the bag constant $$B_g$$ B g have been studied in details through equi-mass and equi- $$B_g$$ B g contour. The maximum allowable mass and the corresponding radius have been obtained via $$M-R$$ M - R plots. |
| first_indexed | 2024-03-12T01:40:58Z |
| format | Article |
| id | doaj.art-d0562ab5486044fab4cbb5ecaa0ffbe8 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-03-12T01:40:58Z |
| publishDate | 2023-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-d0562ab5486044fab4cbb5ecaa0ffbe82023-09-10T11:24:28ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-07-0183711910.1140/epjc/s10052-023-11745-yPhysical characteristics and maximum allowable mass of hybrid star in the context of f(Q) gravityPiyali Bhar0Sneha Pradhan1Adnan Malik2P. K. Sahoo3Department of Mathematics, Government General Degree College SingurDepartment of Mathematics, Birla Institute of Technology and Science-Pilani, Hyderabad CampusSchool of Mathematical Sciences, Zhejiang Normal UniversityDepartment of Mathematics, Birla Institute of Technology and Science-Pilani, Hyderabad CampusAbstract In this study, we explore several new characteristics of a static anisotropic hybrid star with strange quark matter (SQM) and ordinary baryonic matter (OBM) distribution. Here, we use the MIT bag model equation of state to connect the density and pressure of SQM inside stars, whereas the linear equation of state $$p_r =\alpha \rho -\beta $$ p r = α ρ - β connects the radial pressure and matter density caused by baryonic matter. The stellar model was developed under a background of f(Q) gravity using the quadratic form of f(Q). We utilized the Tolman–Kuchowicz ansatz (Tolman in Phys. Rev. 55:364–373, 1939; Kuchowicz in Acta Phys Pol 33: 541, 1968) to find the solutions to the field equations under modified gravity. We have matched the interior solution to the external Schwarzschild spacetime in order to acquire the numerical values of the model parameters. We have selected the star Her X-1 to develop various profiles of the model parameters. Several significant physical characteristics have been examined analytically and graphically, including matter densities, tangential and radial pressures, energy conditions, anisotropy factor, redshirt, compactness, etc. The main finding is that there is no core singularity present in the formations of the star under investigation. The nature of mass and the bag constant $$B_g$$ B g have been studied in details through equi-mass and equi- $$B_g$$ B g contour. The maximum allowable mass and the corresponding radius have been obtained via $$M-R$$ M - R plots.https://doi.org/10.1140/epjc/s10052-023-11745-y |
| spellingShingle | Piyali Bhar Sneha Pradhan Adnan Malik P. K. Sahoo Physical characteristics and maximum allowable mass of hybrid star in the context of f(Q) gravity European Physical Journal C: Particles and Fields |
| title | Physical characteristics and maximum allowable mass of hybrid star in the context of f(Q) gravity |
| title_full | Physical characteristics and maximum allowable mass of hybrid star in the context of f(Q) gravity |
| title_fullStr | Physical characteristics and maximum allowable mass of hybrid star in the context of f(Q) gravity |
| title_full_unstemmed | Physical characteristics and maximum allowable mass of hybrid star in the context of f(Q) gravity |
| title_short | Physical characteristics and maximum allowable mass of hybrid star in the context of f(Q) gravity |
| title_sort | physical characteristics and maximum allowable mass of hybrid star in the context of f q gravity |
| url | https://doi.org/10.1140/epjc/s10052-023-11745-y |
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