Hypermassive quark cores

Abstract

Using a quantum hadrodynamics (QHD) and MIT based models we construct hybrid stars within the Maxwell criteria of hadron-quark phase transition. We are able to produce a hybrid star with maximum mass of 2.15$M_{\odot }$. Furthermore, a 2.03$M_{\odot }$ star with a quark core corresponding to more than $80\%$ of both, its total mass and radius, is also possible.

Comments: 13 pages, 11 figures, 15 tables