2019/09/17 by Suman Thakur, Thakur, Suman, Shashi K. Dhiman +1
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Gamma-ray bursts and supernovae #Geophysics and Gravity Measurements #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Pulsars and Gravitational Waves Research
paper · pdf · doi:10.48550/arxiv.1909.07579
openalex publication_date 2019/09/17 · openalex created_date 2022/07/28 · openalex updated_date 2026/07/28
We investigate the possible sequels, for the hybrid compact stars consisting\nof nucleons, hyperons and three flavour color-flavor-locked quarks phase under\nglobal neutrality and chemical equilibrium conditions. The hadron equations of\nstate are computed within the framework of energy density functionals based on\nthe relativistic mean field theory by employing two different model\nparameterizations. The quarks matter phase of equation of state is computed by\nusing Quarks Quasiparticle model derived from a non-relativistic energy\ndensity-functional approach. A plausible set of hybrid equations of state for\nsuperdense hadron-quarks matter is obtained and, which satisfies the\nconstraints provided by bulk nuclear matter, the observational data of\nfrequencies and maximum Gravitational mass 2M_ odot with their extracted\nradii, Keplerian limits, secular axisymmetric instability and limits of tidal\ndeformabilities from GW170817 binary neutron stars (BNS) merger. We obtained\nstructural properties of nonrotating and rotating compact stars, the\nevolutionary sequences with constant baryonic mass star spinning down by\nelectromagnetic and gravitational radiations and, discuss the issues relating\nto phase transition from hadrons to quarks matter phase. The internal structure\nof rotating star with observed spin down frequencies, exhibiting shrinkage of\nsoft quarks core of compact stars are discussed for constant baryonic mass. We\npresent the theoretically computed limits of radii for the spin down\nconfigurations of hybrid stars corresponding to the recently observed\nmillisecond pulsars. We also present and discuss the calculated results for\ntidal deformability, \Λ and tidal parameters \Λ1, \Λ2 of\nnon spining hybrid star which are consistent with the waveform model analysis\nof GW170817 BNS.\n