Affiliation: NIT - CALICUT
Conference ID : ASI2022_513
Title : Constraining the phenomenologically parameterized neutron star equation of state with astronomical observations
Authors : S. Mullai Vaneshwar, Jaikhomba Singha, Ankit Kumar, Dr Paramasivan Arumugam
Abstract Type: Poster
Abstract Category : Stars, ISM and Galaxy
Abstract : Neutron stars (NS) are highly dense stellar remnants. The interior of such objects cannot be observed directly, but rather a phenomenological approach is needed to probe inside their cores. An equation of state (EOS) describes the composition inside these stars, and every such EOS is based on a different theoretical model of interactions of high-density matter. There are a vast number of EOSs that are used to estimate a variety of NS properties. We have placed an assortment of constraints on some of the readily available EOSs that are generally used. In the work, we looked into the observational astronomical constraints, especially the non-conventional ones, like the Fractional Moment of Inertia and the Pulsar Braking Index. We calculated these quantities for fast spinning NSs in an axially symmetric spacetime, and find that there are huge inconsistencies with available data.