2017/12/05 by D. Bandyopadhyay, Debades Bandyopadhyay, Sajad A. Bhat +5 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Cosmology and Gravitation Theories #Hyperon #Moment (physics) #Neutron #Neutron star #Phase (matter) #Pulsars and Gravitational Waves Research #Quadrupole #Universality (dynamical systems) #astro-ph.HE
paper · pdf · doi:10.1140/epja/i2018-12456-y
8 pages, 10 figures, submitted to EPJA (July, 2017)
arxiv created 2017/12/05 · openalex created_date 2017/12/22 · openalex publication_date 2018/02/01 · arxiv updated 2018/04/04 · openalex updated_date 2026/08/05
We investigate the impact of strange matter equations of state involving Λ hyperons, Bose-Einstein condensate of K- mesons and first order hadron-quark phase transition on moment of inertia, quadrupole moment and tidal deformability parameter of slowly rotating neutron stars. All these equations of state are compatible with the 2 Msolar constraint. The main findings of this investigation are the universality of the I-Q and I-Love number relations, which are preserved by the EoSs including Λ hyperons and antikaon condensates, but broken in presence of a first order hadron-quark phase transition. Furthermore, it is also noted that the quadrupole moment approaches the Kerr value of a black hole for maximum mass neutron stars.