Astrophysical evidence for a weak new force\?

Details Astrophysical evidence for a weak new force\? Astrophysical evidence for a weak new force\?

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvd..38.2944b&link_type=abstract

Physical Review D (Particles and Fields), Volume 38, Issue 10, 15 November 1988, pp.2944-2950

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Other Topics In General Relativity And Gravitation, Eclipsing Binaries

Scientific paper

Discrepancies between measurements of and theoretical predictions for the orbital precession in binary-star systems are reexamined assuming the existence of a hitherto undiscovered, very weak long-range force. The binary-star data are consistent with the existence of such a force only if the internal density parameter k2, computed using stellar models, is uncertain to 80% for some of the stars involved. If so, the observations are compatible with a repulsive force that couples to electrically neutral bulk matter through a linear combination of neutron and proton number with 10-5-10-4 the strength of gravity and a range of (3-6)×106 km. Surprisingly, such a force is consistent with the binary pulsar and extraterrestrial solar-system tests of general relativity. It is ruled out only by very recent tests of the principle of equivalence on Earth. Such binary-star systems are extremely sensitive to, and so furnish strong constraints on, new forces.

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