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

Journal Article · Wed May 01 04:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/169969· OSTI ID:5589054

Campbell, L M; Moffat, J W; Savaria, P ^[1]

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1. CSIC, Instituto de Optica, Madrid (Spain) Toronto, University (Canada)

Spherically symmetric, static, numerical solutions of the field equations of 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. 31 refs.

• OSTI ID: 5589054
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 372; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
DWARF STARS
EQUATIONS
EQUATIONS OF STATE
FIELD EQUATIONS
FIELD THEORIES
GENERAL RELATIVITY THEORY
LIMITING VALUES
MAIN SEQUENCE STARS
MATHEMATICAL MODELS
NEUTRON STARS
NUMERICAL SOLUTION
STAR MODELS
STARS
WHITE DWARF STARS