Limits on the variability of G using binary-pulsar data

Details Limits on the variability of G using binary-pulsar data Limits on the variability of G using binary-pulsar data

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvl..61.1151d&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 61, Sept. 5, 1988, p. 1151-1154.

Physics

112

Binary Stars, Gravitational Constant, Pulsars, Acceleration, Center Of Mass, Nuclear Fusion

Scientific paper

The time variation of the Newtonian gravitational constant G is derived from observational data on the binary pulsar PSR 1913+16. The theoretical principles involved are discussed in detail, and the resulting theory-independent ratio of the change in G0 to G0 is given as (1.0 + or - 2.3) x 10 to the -11th/yr, consistent with zero. The implications of this finding for unified theories of gravity which predict time variation of coupling constants over a Hubble time are considered.

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