Quark neutron layer stars

Abstract

view Abstract Citations (9) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Quark Neutron Layer Stars Carinhas, Philip A. Abstract Typical nuclear equations of state and a quark bag model, surprisingly, allow compact stars with alternate layers of neutrons and quarks. One can determine on the basis of the Gibbs free energy which phase, nuclear or quark, is energetically favorable. Using the nuclear equation of state of Wiringa, and a quark equation of state given by Freedman and McLerran, the allowed quark parameter space for such layer stars is searched. This paper differs from past work in that configurations are found in which quark matter is located exterior and interior to shells of nuclear matter, i.e., dependent on quark parameters, a star may contain several alternating layers of quark and nuclear matter. Given the uncertainty in the quark parameter space, one can estimate the probability for finding pure neutron stars, pure quark stars (strange stars), stars with a quark core and a nucleon exterior, or layer stars. Several layer models are presented. The physical characteristics, stability, and results of a thorough search of the quark parameter space are presented. Publication: The Astrophysical Journal Pub Date: July 1993 DOI: 10.1086/172913 arXiv: arXiv:astro-ph/9304021 Bibcode: 1993ApJ...412..213C Keywords: Computational Astrophysics; Equations Of State; Neutron Stars; Nuclear Astrophysics; Quarks; Stellar Envelopes; Stellar Interiors; Stellar Models; Astrophysics; ELEMENTARY PARTICLES; EQUATION OF STATE; Astrophysics E-Print: 14, WISC-MIL-92-TH-15 full text sources arXiv | ADS |