Williams et al. Reply (to the Comment by Dumin on"Progress in Lunar Laser Ranging Tests of Relativistic Gravity")

By James G. Williams, S. Turyshev, D. Boggs. 2006

521 citations recorded by the source corpus.

A decreasing gravitational constant, G, coupled with angular momentum conservation is expected to increrase a planetary semimajor axis, a, as \dot a/a=-\dot G/G. Analysis of lunar laser ranging data strongly limits such temporal variations and constrains a local (~1 AU) scale expansion of the solar system as \dot a/a=-\dot G/G =-(4\pm9)\times10^{-13} yr^{-1}, including that due to cosmological effects.

Subfields: Astronomy and Astrophysics, Condensed Matter Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/0f45d7acae8b436d572e01f1a459210bf3983521

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In Astronomy and Astrophysics

1. G. Hobbs
2. R. Manchester
3. Michael Kramer
4. Jim Cordes
5. J. Verbiest
6. N. Wex
7. T. Clifton
8. M. Bailes

In Condensed Matter Physics

1. T. Damour
2. C. Burgess
3. C. Will
4. Tsutomu Kobayashi
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In Statistical and Nonlinear Physics

1. C. Will
2. T. Clifton
3. Jim Cordes
4. T. Damour
5. C. Burgess
6. G. Hobbs
7. R. Manchester
8. Tsutomu Kobayashi

Citations in the corpus

• The Cosmological Constant Problem: Why it's hard to get Dark Energy from Micro-physics (2013, methodology): “But tests of the principle of equivalence, such as those using lunar laser ranging [21], show that gravity couples to the total energy density of an atom, including its binding energy, to an accuracy of a part in 1013, and so could in principle tell if, for some reason, quantum fluctuations within a”
• General Relativity and Cosmology: Unsolved Questions and Future Directions (2016, unknown): “5)× 10−4 Data to 2004 [334,335] Very long baseline interferometry |γPPN − 1| = 4× 10−4 Data from 1979 to 1999 [336]”
• Precision Timing of PSR J0437–4715: An Accurate Pulsar Distance, a High Pulsar Mass, and a Limit on the Variation of Newton’s Gravitational Constant (2008, background): “…the same order as those previously derived from pulsar timing (see x 1), but a currently ongoing VLBI campaign on this pulsar is expected to improve significantly on our parallax measurement, and this should improve our limit to close to that put by LLR [(4 9) ; 10 13 yr 1; Williams et al. 2004].”
• Theoretical aspects of the equivalence principle (2012, methodology): “ed it to perform a joint analysis of the two current experiments which have reached the 10−13 level in η ij, namely, the terrestrial Eo¨tWash experiment [26] and the celestial Lunar Laser Ranging one [27]. This resulted in limits of order 10−9 on the two (unknown) theoretical parameters D 1 and D 2.”
• Effect of Sun and Planet-Bound Dark Matter on Planet and Satellite Dynamics in the Solar System (2010, unknown): “Lunar Laser Ranging yields [56] μ̇ μ = (4± 9)× 10 yr, (20)”
• Search for New Physics with Atoms and Molecules (2017, methodology): “Lunar laser-ranging experiments, which measure the differential accelerations of the Earth and Moon towards the Sun, provided similarly stringent limits to the violation of the equivalence principle (Williams et al., 2004, 2012).”
• A 2.1 M☉ Pulsar Measured by Relativistic Orbital Decay (2005, background): “A comparable limit on (Ṗb/Pb)Ġ can be set using limits on Ġ from lunar laser ranging measurements, which have found Ġ/G ¼ (1:3 2:9) ; 10 20 s 1 (Williams et al. 2004).”
• Varying Constants, Gravitation and Cosmology (2010, background): “With, 24 years of data, one reached [542] |?̇?/G| ≤ 6× 10−12 yr−1 and finally, the latest analysis of the Lunar laser ranging experiment [543] increased the constraint to ?̇? G ⃒⃒⃒⃒ ⃒ 0 = (4± 9)× 10−13 yr−1.”