40 citations · 437 across the 26 of their papers we have counts for
26 papers
Galactic tides in the Solar System within a non-axisymmetric Milky Way model adjusted to Gaia data
Alexandre Bougakov, Yassin Rany Khalil, Marc Fouchard +4
Context. Galactic tides are external differential forces acting on extended systems immersed in the Galactic potential. They play a key role in the dynamics of comets in the Oort c…
An efficient integrator for stellar dynamics in effective gravity fields based on the isochrone potential
Alexandre Bougakov, Melaine Saillenfest, Marc Fouchard
Context. Integrating the motion of stars in a smoothed potential is necessary in many stellar and galactic studies. Previous works have often used numerical integrators that altern…
Explanation of the exceptionally strong timing noise of PSR J0337+1715 by a circum-ternary planet and consequences for gravity tests
Guillaume Voisin, Ismaël Cognard, Melaine Saillenfest +6
Context: Timing of pulsar PSR J0337+1715 provides a unique opportunity to test the strong equivalence principle (SEP) with a strongly self-gravitating object. This is due to its un…
Long-Term Evolution of the Saturnian System
Matija Ćuk, Maryame El Moutamid, Giacomo Lari +5
Here we present the current state of knowledge on the long-term evolution of Saturn's moon system due to tides within Saturn. First we provide some background on tidal evolution, o…
Characterisation of chaos and mean-motion resonances in meteoroid streams -- Application to the Draconids and Leonids
Ariane Courtot, Melaine Saillenfest, Jérémie Vaubaillon +1
Context. Dynamically linking a meteor shower with its parent body is challenging, and chaos in the dynamics of meteoroid streams may be one of the reasons. For a robust identificat…
Oblique rings from migrating exomoons: A possible origin for long-period exoplanets with enlarged radii
Melaine Saillenfest, Sophia Sulis, Paul Charpentier +1
Context. The extremely low density of several long-period exoplanets in mature systems is still unexplained -- with HIP 41378 f being archetypical of this category. It has been pro…
Dynamical history of the Galilean satellites for a fast migration of Callisto
Giacomo Lari, Melaine Saillenfest, Clara Grassi
The dynamics of the innermost Galilean satellites (Io, Europa and Ganymede) is characterised by a chain of mean motion resonances, called Laplace resonance, and by a strong tidal d…
Tilting Uranus via the migration of an ancient satellite
Melaine Saillenfest, Zeeve Rogoszinski, Giacomo Lari +4
Context. The 98°-obliquity of Uranus is commonly attributed to giant impacts that occurred at the end of the planetary formation. This picture, however, is not devoid of weaknesses…
One pulsar, two white dwarfs, and a planet confirming the strong equivalence principle
Guillaume Voisin, G Luth, I Cognard +7
The strong equivalence principle is a cornerstone of general relativity, tested with exquisite accuracy in the Solar system. However, tests in the strong-field regime require a com…
Future destabilisation of Titan as a result of Saturn's tilting
Melaine Saillenfest, Giacomo Lari
Context: As a result of Titan's migration and Saturn's probable capture in secular spin-orbit resonance, recent works show that Saturn's obliquity could be steadily increasing toda…
The large obliquity of Saturn explained by the fast migration of Titan
Melaine Saillenfest, Giacomo Lari, Gwenaël Boué
The obliquity of a planet is the tilt between its equator and its orbital plane. Giant planets are expected to form with near-zero obliquities. After its formation, some dynamical…
The future large obliquity of Jupiter
Melaine Saillenfest, Giacomo Lari, Ariane Courtot
Aims: We aim to determine whether Jupiter's obliquity is bound to remain exceptionally small in the Solar System, or if it could grow in the future and reach values comparable to t…
The past and future obliquity of Saturn as Titan migrates
Melaine Saillenfest, Giacomo Lari, Gwenaël Boué +1
Aims: It has recently been shown that the fast migration of Titan could be responsible for the current 26.7°-tilt of Saturn's spin axis. We aim to quantify the level of generality…
Long-term orbital dynamics of trans-Neptunian objects
Melaine Saillenfest
This article reviews the different mechanisms affecting the orbits of trans-Neptunian objects, ranging from internal perturbations (planetary scattering, mean-motion resonances, se…
Long-term evolution of the Galilean satellites: the capture of Callisto into resonance
G. Lari, M. Saillenfest, M. Fenucci
Context. The strong tidal dissipation in the couple Jupiter-Io is spread to all the moons involved in the Laplace resonance (Io, Europa, and Ganymede), leading to a migration of th…
Chaos in the inert Oort cloud
Melaine Saillenfest, Marc Fouchard, Takashi Ito +1
Context: Distant trans-Neptunian objects are subject to planetary perturbations and galactic tides. The former decrease with the distance, while the latter increase. In the interme…
Secular spin-axis dynamics of exoplanets
Melaine Saillenfest, Jacques Laskar, Gwenaël Boué
Context: Seasonal variations and climate stability of a planet are very sensitive to the planet obliquity and its evolution. This is of particular interest for the emergence and su…
Strong tidal energy dissipation in Saturn at Titan's frequency as an explanation for Iapetus orbit
William Polycarpe, Melaine Saillenfest, Valéry Lainey +3
Natural satellite systems present a large variety of orbital configurations in the solar system. While some are clearly the result of known processes, others still have largely une…
Solar wind dynamics around a comet: The paradigmatic inverse-square-law model
Melaine Saillenfest, Benoît Tabone, Etienne Behar
Aims. Observations of solar protons near comet 67P/Churyumov-Gerasimenko (67P) by the Rosetta spacecraft can be modelled by the planar motion in an effective magnetic field proport…
Solar wind dynamics around a comet - A 2D semi-analytical kinetic model
E. Behar, B. Tabone, M. Saillenfest +5
We aim at analytically modelling the solar wind proton trajectories during their interaction with a partially ionised cometary atmosphere, not in terms of bulk properties of the fl…
The root of a comet tail - Rosetta ion observations at comet 67P/Churyumov--Gerasimenko
E. Behar, H. Nilsson, P. Henri +7
The first 1000 km of the ion tail of comet 67P/Churyumov-Gerasimenko were explored by the European Rosetta spacecraft, 2.7 au away from the Sun. We characterised the dynamics of bo…
Non-resonant secular dynamics of trans-Neptunian objects perturbed by a distant super-Earth
Melaine Saillenfest, Marc Fouchard, Giacomo Tommei +1
We use a secular model to describe the non-resonant dynamics of trans-Neptunian objects in the presence of an external ten-earth-mass perturber. The secular dynamics is analogous t…
The long-term evolution of known resonant trans-Neptunian objects
Melaine Saillenfest, Giacomo Lari
Aims. Numerous trans-Neptunian objects are known to be in mean-motion resonance with Neptune. We aim to describe their long-term orbital evolution (both past and future) by means o…
Study and application of the resonant secular dynamics beyond Neptune
Melaine Saillenfest, Marc Fouchard, Giacomo Tommei +1
We use a secular representation to describe the long-term dynamics of transneptunian objects in mean-motion resonance with Neptune. The model applied is thoroughly described in Sai…