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We assume that ultra dense neutron stars are endowed with a distribution of electric charge and study the twin star solutions and their properties resulting from a first order transition from confined hadronic to deconfined quark phases. Two distinct phenomenological treatments for the phase transition are considered and the values for the maximum gravitational masses of the hadronic and hybrid configurations are estimated for different values of the total electric charge. We demonstrate that stable compact charged twin stars exist, with charged stars being more massive than their neutral counterparts, and that the standard ${2.2}{M_{odot}}$ constraint is surpassed for large values of the electric charge. In particular, our results suggest that the unknown compact object of $approx {2.6}{M_{odot}}$ measured in the GW190814 event might be a charged star.
The study of the general properties and stability of charm stars with a net electric charge is performed within the MIT bag model framework. We consider two different models for the electric charge distribution and demostrate that both imply stellar
We investigate the implications of a hypothetical $2.5,mathrm{M_odot}$ neutron star in regard to the possibility of a strong phase transition to quark matter. We use equations of state (EoS) of varying stiffness provided by a parameterizable relativi
In this work we study the properties of compact spheres made of a charged perfect fluid with a MIT bag model EoS for quark matter. Considering static spherically symmetric spacetime we derive the hydrostatic equilibrium equations in the recently form
We explore the possibility of discovering the mirror baryons and electrons of the Mirror Twin Higgs model in direct detection experiments, in a scenario in which these particles constitute a subcomponent of the observed DM. We consider a framework in
The proposed correspondence between the Hawking-Unruh radiation mechanism in rotating, electrically-charged and electrically-charged-rotating black holes and the hadronization in high-energy physics is assumed. This allows us to determine the well-pr