Electrically charged supermassive twin stars
arXiv:2109.04806 · doi:10.1140/epjc/s10052-022-10067-9
Abstract
By assuming that ultra dense hybrid neutron stars are endowed with a distribution of electric charge, we study the corresponding twin star solutions and their properties resulting from a sharp first order transition from confined hadronic to a deconfined quark phase. Two distinct quark matter equations of state with increasing stiffness are considered and the values for the maximum gravitational masses of the hadronic and hybrid twin configurations are obtained for different values of the total electric charge. Interestingly, our calculations indicate that sharp transitions make charged twin hybrid stars more massive than their neutral counterparts, and that the {$\SI{2}{M_{\odot}}$ constraint from PSR J0740+6620} is surpassed for standard values of electric charge and can be considered stable only satisfying . In particular, our charged stellar models reach masses even higher than the unknown compact object measured in the GW190814 event.
arXiv comment8 pages, 4 figures, 2 tables. Improved version to be published in EPJC
References in corpus (36)
- Multi-messenger Observations of a Binary Neutron Star Merger
- PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
- A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
- Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
- Neutron Star Observations: Prognosis for Equation of State Constraints
- A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
- Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
- Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817
- Using gravitational-wave observations and quasi-universal relations to constrain the maximum mass of neutron stars
- Equation of state and neutron star properties constrained by nuclear physics and observation
- Generic conditions for stable hybrid stars
- Electrically charged compact stars and formation of charged black holes
- Quark phases in neutron stars and a "third family" of compact stars as a signature for phase transitions
- Constraining neutron star matter with QCD
- A new quark-hadron hybrid equation of state for astrophysics - I. High-mass twin compact stars
- Sharp bounds on the critical stability radius for relativistic charged spheres
- Constraining twin stars with GW170817
- GW190814 as a massive rapidly-rotating neutron star with exotic degrees of freedom
- Phase transition effects on the dynamical stability of hybrid neutron stars
- Third family of compact stars within a nonlocal chiral quark model equation of state
- Relativistic Structure, Stability and Gravitational Collapse of Charged Neutron Stars
- High-mass twin stars with a multi-polytrope EoS
- Equilibrium and stability of charged strange quark stars
- The possibility of the secondary object in GW190814 as a neutron star
- Future Physics Perspectives on the Equation of State from Heavy Ion Collisions to Neutron Stars
- Classifications of Twin Star Solutions for a Constant Speed of Sound Parameterized Equation of State
- Mixed phase effects on high-mass twin stars
- Robustness of third family solutions for hybrid stars against mixed phase effects
- Neutron star structure from QCD
- Supermassive Neutron Stars Rule Out Twin Stars
- Radial oscillations of neutral and charged hybrid stars
- Studying the onset of deconfinement with multi-messenger astronomy of neutron stars
- The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
- Hadron-Quark phase transition in the context of GW190814
- Electrically charged strange stars with an interacting quark matter equation of state
- The possibility of twin star solutions in a model based on lattice QCD thermodynamics