Dipole gravitational radiation in the nonsymmetric gravitational theory of Moffat

Journal Article · Mon Jul 15 00:00:00 EDT 1985 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.32.329· OSTI ID:5601208

Krisher, T P

The generation of gravitational radiation in the nonsymmetric gravitational theory (NGT) of Moffat is analyzed. It is shown that the theory predicts the emission of dipole gravitational radiation from a binary system. The source of the dipole radiation is a vector density S postulated to be proportional to the number density of fermion particles in the components of the system. This radiation is shown to result in a secular decrease in the orbital period of a binary system in addition to that predicted by general relativity. The size of the effect is proportional to the reduced mass of the system and to the square of the difference in l/sup 2//(mass) between the two components of the system, where l is a parameter having units of (length) that is related to the number of fermion particles in each component. As part of the analysis, the stress-energy pseudotensor of the NGT, expanded to quadratic order in the gravitational fields, and the NGT gravitational-wave luminosity formula are derived for the first time. With a perfect-fluid model of matter, results are also given for the post-Newtonian expansions of the source densities of the gravitational fields. The results of this analysis are then applied to the binary pulsar system PSR 1913+16 which contains a pulsar orbiting an unobserved companion.

• Research Organization: McDonnell Center for the Space Sciences, Department of Physics, Washington University, St. Louis, Missouri 63130
• OSTI ID: 5601208
• Journal Information: Phys. Rev. D; (United States), Vol. 32:2
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GRAVITATIONAL RADIATION
DIPOLE MOMENTS
COUPLING CONSTANTS
EINSTEIN FIELD EQUATIONS
GENERAL RELATIVITY THEORY
GRAVITATIONAL WAVES
METRICS
SPACE-TIME
EQUATIONS
FIELD EQUATIONS
FIELD THEORIES
RADIATIONS
645400* - High Energy Physics- Field Theory
657003 - Theoretical & Mathematical Physics- Relativity & Gravitation