2018/05/23 by Smruti Smita Lenka, Lenka, Smruti Smita, Prasanta Char +3 · 2 citations
Physics and Astronomy · #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Astrophysical Phenomena (astro-ph.HE) #Nuclear Theory (nucl-th) #Pulsars and Gravitational Waves Research #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.1805.09492
openalex publication_date 2018/05/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this work, we study the properties and structure of a massive and rapidly\nrotating protoneutron star (PNS) with hyperon content. We follow several stages\nof quasi-stationary evolution in an approximate way at four discrete steps. We\nuse a density-dependent (DD) relativistic mean field theory (RMF) model and\ncalculate different quantities such as mass, equatorial radius, moment of\ninertia, and quadrupole moment to get different rotating configurations upto\nthe mass-shedding limit. We study the effect of the appearance of \Λ,\nthe lightest of all hyperons, on each of the evolutionary stages of the PNS. We\nalso check its sensitivity to the inclusion of \φ vector meson as a\nmediator of \Λ-\Λ interaction in detail. Finally, we investigate\nthe universal relations between moment of inertia and compactness in the\ncontext of a hot and young compact object.\n