Is momentum conserved? A test in the binary system PSR 1913 + 16

Details Is momentum conserved? A test in the binary system PSR 1913 + 16 Is momentum conserved? A test in the binary system PSR 1913 + 16

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...393l..59w&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 393, no. 2, July 10, 1992, p. L59-L61.

Astronomy and Astrophysics

Astrophysics

11

Binary Stars, Gravitational Waves, Pulsars, Stellar Gravitation, Gravitational Fields, Neutron Stars, Relativistic Theory, Solar System

Scientific paper

According to some metric theories of gravity, the center of mass of a binary system may be 'self-accelerated' in the direction of the periastron of the orbit because of a violation of post-Newtonian momentum conservation. No such effect occurs in general relativity. Observational constraints on the second time derivative of the period of the pulsar in the binary system PSR 1913 + 16 are shown to tightly constrain such an effect. In the language of the parameterized post-Newtonian (PPN) framework, the result is a bound on the PPN parameter zeta2 below 4 x 10 exp -5, in agreement with the general relativistic prediction zeta2 = 0.

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