Relativistic effects and dark matter in the Solar system from observations of planets and spacecraft

By E. Pitjeva, N. Pitjev. 2013

165 citations recorded by the source corpus.

The high precision of the latest version of the planetary ephemeris EPM2011 enables one to explore more accurately a variety of small effects in the solar system. The processing of about 678 thousand of position observations of planets and spacecrafts for 1913--2011 with the predominance of modern radar measurements resulted in improving the PPN parameters, dynamic oblateness of the Sun, secular variation of the heliocentric gravitational constant $GM_{\odot}$, and variation range of the gravitational constant $G$. This processing made it possible to estimate the potential additional gravitational influence of dark matter on the motion of the solar system bodies. The density of dark matter ${\rho}_{dm}$, if any, turned out to be substantially below the accuracy achieved by the present determination of such parameters. At the distance of the orbit of Saturn the density ${\rho}_{dm}$ is estimated to be under $1.1\cdot10^{-20}$ g/cm$^3$, and the mass of dark matter in the area inside the orbit of Saturn is less than $7.9\cdot10^{-11}$ M$_{\odot}$ even taking into account its possible tendency to concentrate in the center.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/752a3997c2ee14552a58bfa41d3f876ec2d88e44

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Citations in the corpus

Relativistic tests with lunar laser ranging (2018, unknown): “From the analysis of solar system ephemeris and LLR data, values of γ − 1 = (−1.5 ± 4.8)× 10−5 (Fienga et al 2014b), γ − 1 = (4 ± 6)× 10−5 (Pitjeva and Pitjev 2013) and γ − 1 = (0 ± 5)× 10−3 (Williams et al 1996a) were estimated.”
General Relativity and Cosmology: Unsolved Questions and Future Directions (2016, background): “With the launch on 2013 of the Gaia mission (http://www.cosmos.esa.int/web/gaia), we will soon have improved data on Solar System ephemerides, and on the orbits and tidal streams in the Milky Way.”
The 4D Einstein–Gauss–Bonnet theory of gravity: a review (2022, methodology): “(164) This result can be seen to be competitive with the bounds obtained from observations of the orbit of Mercury and the orbits of the double pulsar, but are weaker than those obtained from the LAGEOS satellites.”