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Context. The 98{\deg}-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. Aims. On a billion-year timescale, the tidal…

地球与行星天体物理 · 物理学 2022-12-14 Melaine Saillenfest , Zeeve Rogoszinski , Giacomo Lari , Kevin Baillié , Gwenaël Boué , Aurélien Crida , Valéry Lainey

In a multiplanet system, tides acting on the inner planet can significantly affect the orbital evolution of the entire system. While tides usually damp eccentricities, a novel mechanism identified by Correia et al. (2012) tends to raise…

地球与行星天体物理 · 物理学 2015-06-17 Richard Greenberg , Christa Van Laerhoven , Rory Barnes

Eccentricity or obliquity tides have been proposed as the missing energy source that may explain the anomalously large radius of some transiting ``hot Jupiters''. To maintain a non-zero and large obliquity, it was argued that the planets…

We describe the long-term evolution of compact systems of terrestrial planets, using a set of simulations that match the statistical properties of the observed exoplanet distribution. The evolution is driven by tidal dissipation in the…

地球与行星天体物理 · 物理学 2015-06-19 Bradley M. S. Hansen , Norman Murray

After finding more planets than expected at the shortest period, there has been an effort to explain their numbers by weak tidal friction. However, we find that the strength of tidal dissipation that would produce the occurence distribution…

地球与行星天体物理 · 物理学 2012-11-12 Stuart F. Taylor

The best constraints on the internal structures of giant planets have historically come from measurements of their gravity fields. These gravity data are inherently mostly sensitive to a planet's outer regions, providing only loose…

地球与行星天体物理 · 物理学 2021-05-05 Christopher Mankovich , Jim Fuller

We consider the evolution of a binary system interacting due to tidal effects without restriction on the orientation of the orbital, and where significant, spin angular momenta, and orbital eccentricity. We work in the low tidal forcing…

太阳与恒星天体物理 · 物理学 2020-11-11 P. B. Ivanov , J. C. B. Papaloizou

The Juno spacecraft has acquired exceptionally precise data on Jupiter's gravity field, offering invaluable insights into Jupiter's tidal response, interior structure, and dynamics, establishing crucial constraints. We develop a new model…

地球与行星天体物理 · 物理学 2023-11-07 Hachem Dhouib , Clément Baruteau , Stéphane Mathis , Florian Debras , Aurélie Astoul , Michel Rieutord

We calculate the eccentricity excitation of asteroids produced by the sweeping $\nu_6$ secular resonance during the epoch of planetesimal-driven giant planet migration in the early history of the solar system. We derive analytical…

地球与行星天体物理 · 物理学 2015-05-27 David A. Minton , Renu Malhotra

(Abbreviated) We investigate the dynamical mechanisms responsible for producing tidal tails from dwarf satellites using N-body simulations. We identify two important dynamical co-conspirators: 1) the points where the attractive force of the…

天体物理学 · 物理学 2009-11-13 Jun-Hwan Choi , Martin D. Weinberg , Neal Katz

Tidal dissipation due to convective turbulent viscosity shapes the evolution of a variety of astrophysical binaries. For example, this type of dissipation determines the rate of orbital circularization in a binary with a post-main sequence…

太阳与恒星天体物理 · 物理学 2020-08-13 Michelle Vick , Dong Lai

Tidal dissipation in planetary interiors is one of the key physical mechanisms that drive the evolution of star-planet and planet-moon systems. New constraints are now obtained both in the Solar and exoplanetary systems. Tidal dissipation…

地球与行星天体物理 · 物理学 2014-07-02 Mathieu Guenel , Stéphane Mathis , Françoise Remus

Saturn's largest moon, Titan, has an Earth-like volatile cycle, but with methane playing the role of water and surface liquid reservoirs geographically isolated at high latitudes. We recreate Titan's characteristic dry hydroclimate at the…

地球与行星天体物理 · 物理学 2022-07-14 Matthew McKinney , J. Mitchell , S. I. Thomson

We analyze the orbital motion of two natural satellites initially in co-orbital configuration with a third (guiding) satellite embedded into a circumplanetary gas disc and undergoing tidal interactions with the central planet. By solving…

地球与行星天体物理 · 物理学 2019-06-05 Adrián Rodríguez , Jorge Correa-Otto , Tatiana Michtchenko

The ejecta discharged by impacting meteorites can redistribute a planetary ring's mass and angular momentum. This `ballistic transport' of ring properties instigates a linear instability that could generate the 100--1000-km undulations…

地球与行星天体物理 · 物理学 2015-10-14 Henrik Latter , Gordon Ogilvie , Marie Chupeau

Within hierarchical triple stellar systems, there exists a tidal process unique to them, known as tertiary tides. In this process, the tidal deformation of a tertiary in a hierarchical triple drains energy from the inner binary, causing the…

太阳与恒星天体物理 · 物理学 2025-09-03 Yan Gao , Tjarda Boekholt , Devismita Panda , Tatsuya Akiba , Silvia Toonen

Layered semi-convection is a possible candidate to explain Saturn's luminosity excess and the abnormally large radius of some hot Jupiters. In giant planet interiors, it could lead to the creation of density staircases, which are convective…

地球与行星天体物理 · 物理学 2017-09-20 Quentin André , Adrian J. Barker , Stéphane Mathis

We investigate the dynamical evolution of hierarchical three-body systems under the effect of tides, when the ratio of the orbital semi-major axes is small and the mutual inclination is relatively large (greater than 20 degrees). Using the…

地球与行星天体物理 · 物理学 2011-07-06 Alexandre C. M. Correia , Jacques Laskar , François Farago , Gwenaël Boué

The origin of the high inclination of Uranus' spin-axis (Uranus' obliquity) is one of the great unanswered questions about the Solar system. Giant planets are believed to form with nearly zero obliquity, and it has been shown that the…

地球与行星天体物理 · 物理学 2015-05-14 Gwenaël Boué , Jacques Laskar

Highly eccentric binary systems appear in many astrophysical contexts, ranging from tidal capture in dense star clusters, precursors of stellar disruption by massive black holes, to high-eccentricity migration of giant planets. In a highly…

太阳与恒星天体物理 · 物理学 2018-02-14 Michelle Vick , Dong Lai