We present results from the search for a stochastic gravitational-wave background (GWB) as
predicted by the theory of General Relativity using six radio millisecond pulsars from the …

Pulsar timing arrays (PTAs) are galactic-scale gravitational wave (GW) detectors. Each
individual arm, composed of a millisecond pulsar, a radio telescope, and a kiloparsecs-long …

We search for an isotropic stochastic gravitational-wave background (GWB) in the 12.5 yr
pulsar-timing data set collected by the North American Nanohertz Observatory for …

We describe here how planetary ephemerides are built in the framework of General
Relativity and how they can be used to test alternative theories. We focus on the definition of …

Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6
million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quality …

Due to tidal interactions in the Earth-Moon system, the spin of the Earth slows down and the
Moon drifts away. This recession of the Moon can now be measured with great precision, but …

Over the past few decades, the measurement precision of some pulsar timing experiments
has advanced from∼ 10 μs to∼ 10 ns, revealing many subtle phenomena. Such high …

In this work, we investigated Bayesian methodologies for constraining in the Solar System a
Yukawa suppression of the Newtonian potential—which we interpret as the effect of a non …

Context. We used the new released INPOP19a planetary ephemerides benefiting from
Jupiter-updated positions by the Juno mission and reanalyzed Cassini observations. Aims …

Context. The upcoming JUICE and Europa Clipper missions targeting Jupiter's Galilean
satellites will provide radio science tracking measurements of both spacecraft. Such data are …