g-mode Oscillations in Neutron Stars with Hyperons
Abstract
A common alternative to the standard assumption of nucleonic composition of matter in the interior of a neutron star is to include strange baryons, particularly hyperons. Any change in composition of the neutron star core has an effect on g-mode oscillations of neutron stars, through the compositional dependence of the equilibrium and adiabatic sound speeds. We study the core g-modes of a neutron star contaning hyperons, using a variety of relativistic mean field models of dense matter that satisfy observational constraints on global properties of neutron stars. Our selected models predict a sharp rise in the g-mode frequencies upon the onset of strange baryons. Should g-modes be observed in the near future, their frequency could be used to test the presence of hyperonic matter in the core of neutron stars.
Cite
@article{arxiv.2212.09875,
title = {g-mode Oscillations in Neutron Stars with Hyperons},
author = {Vinh Tran and Suprovo Ghosh and Nicholas Lozano and Debarati Chatterjee and Prashanth Jaikumar},
journal= {arXiv preprint arXiv:2212.09875},
year = {2023}
}
Comments
17 pages, 7 figures