White dwarf and neutron star interior solutions in the nonsymmetric gravitational theory

Abstract

Spherically symmetric, static, numerical solutions of the field equations of the nonsymmetric gravitational theory (NGT) for dense, homogeneous, cold matter with a stiff equation of state are presented in graphic form. As in Einstein's general relativity theory (GRT), two types of stable objects are predicted, corresponding to white dwarfs and neutron stars. The NGT makes these less stable as it effectively softens the equation of state, decreasing their mass and radius. The requirement of stability sets upper limits on the strength of the coupling of ordinary matter (protons, neutrons, and electrons) to NGT forces, and on the total NGT charge of such stars, which rule out that kind of matter as a source of NGT effects strong enough to account for the discrepancies between observed periastron shifts in some main-sequence binary systems and the predictions of Einstein's theory. © 1991. The American Astronomical Society. All rights reserved.