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We study the structure and total energy of a strange quark star (SQS) endowed with a strong magnetic field with different rotational frequencies. The MIT bag model is used, with the density-dependent bag constant for the equation of state…

High Energy Astrophysical Phenomena · Physics 2023-05-08 Fatemeh Kayanikhoo , Mateusz Kapusta , Miljenko Čemeljić

We investigate the structural parameters of strange quark stars (SQS) under the influence of strong magnetic fields and varying rotational frequencies. The equation of state is computed using the MIT bag model with a density-dependent bag…

High Energy Astrophysical Phenomena · Physics 2026-01-15 Fatemeh Kayanikhoo , Mateusz Kapusta , Miljenko Čemeljić , Leszek Zdunik

We perform an O(alpha_s^2) perturbative calculation of the equation of state of cold but dense QCD matter with two massless and one massive quark flavor, finding that perturbation theory converges reasonably well for quark chemical…

High Energy Physics - Phenomenology · Physics 2010-06-22 Aleksi Kurkela , Paul Romatschke , Aleksi Vuorinen

In this work, we have calculated some properties of the spin polarized strange quark matter (SQM) in a strong magnetic field at zero temperature using the MIT bag model. We have shown that the equation of state of spin polarized SQM is…

Solar and Stellar Astrophysics · Physics 2015-05-27 G. H. Bordbar , A. Peivand

This study investigates the effects of different QCD models on the structure of strange quark stars (SQS). In these models, the running coupling constant has a finite value in the infrared region of energy. By imposing some constraints on…

General Relativity and Quantum Cosmology · Physics 2022-08-29 J. Sedaghat , S. M. Zebarjad , G. H. Bordbar , B. Eslam Panah , R. Moradi

This work analyses the hydrostatic equilibrium configurations of strange stars in a non-minimal geometry-matter coupling (GMC) theory of gravity. Those stars are made of strange quark matter, whose distribution is governed by the MIT…

General Relativity and Quantum Cosmology · Physics 2022-12-21 G. A. Carvalho , R. Lobato , P. H. R. S. Moraes , D. Deb , M. Malheiro

Strange-quark matter (SQM) is a likely candidate of the ground state of nuclear matter. Along with many other equations of state (EoSs), SQM seemed to be severely constrained by the recent discoveries of the 1.97 $M_\odot$ PSR J1614-2230…

High Energy Astrophysical Phenomena · Physics 2014-01-17 Nissim Fraija , Enrique Moreno Méndez

Within the confined isospin- and density-dependent mass model, we study the properties of strange quark matter (SQM) and quark stars (QSs) under strong magnetic fields. The equation of state of SQM under a constant magnetic field is…

Nuclear Theory · Physics 2014-10-01 Peng-Cheng Chu , Lie-Wen Chen , Xin Wang

We have studied strange star properties both at zero temperature and at finite temperatures and searched signatures of strange stars in gamma-ray, x-ray and radio astronomy. We have a set of Equations of State (EoS) for strange quark matter…

Astrophysics · Physics 2009-06-23 Manjari Bagchi , Subharthi Ray , Jishnu Dey , Mira Dey

We study the structure of quark stars (QSs) adopting homogeneously confined matter inside the star with a 3-flavor neutral charge and a fixed strange quark mass $m_s$. We explore the internal structure, and the physical properties of…

General Relativity and Quantum Cosmology · Physics 2022-11-23 Takol Tangphati , Indrani Karar , Ayan Banerjee , Anirudh Pradhan

Magnetized strange quark stars, composed of strange quark matter (SQM) and self-bound by strong interactions, can be formed if the energy per baryon of magnetized SQM is less than that of the most stable $^{56}$Fe nucleus under the zero…

High Energy Physics - Phenomenology · Physics 2018-01-17 A. A. Isayev

Thermodynamic properties of strange quark matter (SQM) in a nonuniform magnetic field are studied within the phenomenological MIT bag model under the charge neutrality and beta equilibrium conditions, relevant to the interior of strange…

High Energy Physics - Phenomenology · Physics 2018-09-05 A. A. Isayev

The observations of compact star inspirals from LIGO/Virgo provide a valuable tool to study the highly uncertain equation of state (EOS) of dense matter at the densities in which the compact stars reside. It is not clear whether the merging…

High Energy Astrophysical Phenomena · Physics 2021-08-19 Zhiqiang Miao , Jin-Liang Jiang , Ang Li , Lie-Wen Chen

This study investigates the structural properties of strange quark stars (SQS) using a Quantum Chromodynamics (QCD) perturbative model combined with the latest Particle Data Group dataset. Given the energy scale present in compact stars,…

High Energy Astrophysical Phenomena · Physics 2025-01-30 J. Sedaghat , G. H. Bordbar , S. M. Zebarjad

We study a specific model of anisotropic strange stars in the modified $f\left(R,\mathcal{T}\right)$-type gravity by deriving solutions to the modified Einstein field equations representing a spherically symmetric anisotropic stellar…

General Relativity and Quantum Cosmology · Physics 2019-05-01 Debabrata Deb , Sergei V. Ketov , S. K. Maurya , Maxim Khlopov , P. H. R. S. Moraes , Saibal Ray

We employ the MIT bag model with density-dependent bag constant for the equation of state (EOS) to estimate the gravitational mass and Keplerian frequency of rapidly rotating strange quark stars (SQS). In a companion paper we discuss the…

High Energy Astrophysical Phenomena · Physics 2026-01-15 Fatemeh Kayanikhoo , Mateusz Kapusta , Miljenko Čemeljić , Wlodek Kluzniak , Leszek Zdunik

In this paper, we investigated the thermodynamic properties of strange quark matter using Nambu-Jona-Lasinio (NJL) model at finite temperatures where we considered the dynamical mass as the effective interaction between quarks. By…

Nuclear Theory · Physics 2019-05-22 G. H. Bordbar , R. Hosseini , F. Kayanikhoo , A. Poostforush

We explore the maximum mass limit of strange stars in quadratic curvature gravity with the non-minimal matter coupling. The characteristic parameters of the quadratic curvature coupling and the non-minimal matter coupling imply the…

General Relativity and Quantum Cosmology · Physics 2026-04-24 Debadri Bhattacharjee , Pradip Kumar Chattopadhyay , Kazuharu Bamba

A quark model with running coupling and running strange quark mass, which is thermodynamically self-consistent at both high and lower densities, is presented and applied to study properties of strange quark matter and structure of compact…

High Energy Physics - Phenomenology · Physics 2015-12-29 J. F. Xu , G. X. Peng , F. Liu , D. F. Hou , L. W. Chen

Using a density dependent quark mass (QMDD) model for strange quark matter, we investigate the effects of non-Newtonian gravity on the properties of strange stars and constrain the parameters of the QMDD model by employing the mass of PSR…

High Energy Astrophysical Phenomena · Physics 2021-03-03 Shu-Hua Yang , Chun-Mei Pi , Xiao-Ping Zheng , Fridolin Weber
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