Critical mass, moment of inertia and universal relations of rapidly rotating neutron stars with exotic matter

Abstract

We calculate moment of inertia of neutron star with different exotic constituents such as hyperons and (anti)kaon condensates and study its variation with mass and spin frequency. The sets of equation of state, generated within the framework of relativistic mean field model with density-dependent couplings are adopted for the purpose. We follow the quasi-stationary evolution of rotating stars along the constant rest mass sequences, that varies considerably with different constituents in the equation of state. We also explore the universal relations associated with some of the normalised properties, such as critical mass and moment of inertia for specific EoS or as a matter of fact constituents of the dense matter. Deviations in the universal relations for moment of inertia are observed at higher compactness. This study presents important results concerning the properties of neutron stars, that could be observationally verified in the near future using Square Kilometer Array telescope.

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References in corpus (12)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Equations of state for supernovae and compact stars
• Detection of 16 Gamma-Ray Pulsars Through Blind Frequency Searches Using the Fermi LAT
• Proto-Neutron and Neutron Stars in a Chiral SU(3) Model
• Relativistic model for nuclear matter and atomic nuclei with momentum-dependent self-energies
• Equation of State for Nucleonic and Hyperonic Neutron Stars with Mass and Radius Constraints
• Constraining hypernuclear density functional with $\Lambda$-hypernuclei and compact stars
• Neutron stars with hyperon cores: stellar radii and EOS near nuclear density
• Rotating proto-neutron stars: spin evolution, maximum mass and I-Love-Q relations
• Phase transitions in rotating neutron stars cores: back bending, stability, corequakes and pulsar timing
• Massive Neutron Stars with Antikaon Condensates in a Density Dependent Hadron Field Theory

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