2007
DOI: 10.1086/520528
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Testing Gravity in the Outer Solar System: Results from Trans‐Neptunian Objects

Abstract: The inverse square law of gravity is poorly probed by experimental tests at distances of $10 AU. Recent analysis of the trajectory of the Pioneer 10 and 11 spacecraft have shown an unmodeled acceleration directed toward the Sun, which was not explained by any obvious spacecraft systematics, and occurred when at distances greater than 20 AU from the Sun. If this acceleration represents a departure from Newtonian gravity or is indicative of an additional mass distribution in the outer solar system, it should be … Show more

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Cited by 28 publications
(29 citation statements)
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“…The cosmic microwave background together with the baryon acoustic oscillations restricts the change of the effective gravitational constant between the recombination and the present epochs to be quite small, [25,26], while the current Solar System constraints on the time variantion of G are also very strict [34,35]. Similarly, the motions of objects in the Solar [36][37][38][39] and extra-Solar [40] systems as well as of stars around the massive body in the galactic center [41] are consistent with no significant distance variation of the gravitational constant or a Yukawa type correction. In principle these observations can be employed to constrain the parameters of the models with nonminimally coupled scalar fields (as we did using the PPN parameters [13,29]), however that task remains beyond the scope of the present note.…”
Section: Observational Constraintsmentioning
confidence: 99%
“…The cosmic microwave background together with the baryon acoustic oscillations restricts the change of the effective gravitational constant between the recombination and the present epochs to be quite small, [25,26], while the current Solar System constraints on the time variantion of G are also very strict [34,35]. Similarly, the motions of objects in the Solar [36][37][38][39] and extra-Solar [40] systems as well as of stars around the massive body in the galactic center [41] are consistent with no significant distance variation of the gravitational constant or a Yukawa type correction. In principle these observations can be employed to constrain the parameters of the models with nonminimally coupled scalar fields (as we did using the PPN parameters [13,29]), however that task remains beyond the scope of the present note.…”
Section: Observational Constraintsmentioning
confidence: 99%
“…one-tenth the magnitude of the Pioneer anomalous acceleration, but "consistent with zero" because of the large uncertainties (Wallin et al 2007). However, their data can also be interpreted as consistent with the type of annulus seen in Fig.…”
Section: Effects In the Far Solar Systemmentioning
confidence: 98%
“…f One includes an additional acceleration term in the equation of motion in a way similar to Wallin et al (2007), but here systematically at any distance to the Sun,r = −GM (1/r 3 + κ) r. h That is the sum of a constant rigid rotation Wo at reference epoch t0 and a rotation rate W1 .…”
Section: Results -Discussionmentioning
confidence: 99%