Detailed analysis of the special points on M−R solutions of hybrid/twin stars
| العنوان: | Detailed analysis of the special points on M−R solutions of hybrid/twin stars |
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| المؤلفون: | Debashree Sen, Naosad Alam, Gargi Chaudhuri |
| المصدر: | Physical Review D. 106 |
| بيانات النشر: | American Physical Society (APS), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, FOS: Physical sciences |
| الوصف: | Hadron-quark phase transition in neutron star cores is achieved in the present work with the help of Maxwell construction. For the purpose we employ six different and well-known hadronic models for the pure hadronic phase. The quark phase is described with the MIT Bag model in which the density dependence of the bag pressure $B(\rho)$ is invoked for different asymptotic values ($B_{as}$) of $B(\rho)$. The resulting hybrid star (HS) configurations exhibit twin star characteristics and distinct special points (SPs) on the mass-radius diagram of the HSs irrespective of the transition densities and the value of $B_{as}$. We find that for any particular value of $B_{as}$, the mass corresponding to SP ($M_{SP}$) and the maximum mass ($M_{max}$) of the HSs, obtained with different hadronic models, follow a nearly linear (fitted) relationship where the slope is independent of the value of $B_{as}$. The $M_{SP}-M_{max}$ dependence of the HSs is found to be consistent with any hadronic equation of state (EoS) chosen to obtain the hybrid EoS and thus such relations can be considered as universal relations in the context of formation of SPs. A change in the value of $B_{as}$ shifts the position of the fitted line in the $M_{SP}-M_{max}$ plane, with the linearity, however, retained. Comment: 13 pages; 7 figures; Accepted for Publication in Physical Review D https://journals.aps.org/prd/accepted/b107bQ7fEb41083340418474f8dc31f6f0a84d6b2 |
| تدمد: | 2470-0029 2470-0010 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a78123c2d2646b68d7ef8f396d59f0bf https://doi.org/10.1103/physrevd.106.083008 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....a78123c2d2646b68d7ef8f396d59f0bf |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24700029 24700010 |
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