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Ice sintering is a form of metamorphism that drives the microstructural evolution of an aggregate of grains through surface and volume diffusion. This leads to an increase in the grain-to-grain contact area ("neck") and density of the…

In this Paper we determine the non-dissipative tidal evolution of a close binary system with an arbitrary eccentricity in which the spin angular momenta of both components are misaligned with the orbital angular momentum. We focus on the…

Solar and Stellar Astrophysics · Physics 2024-12-10 Y. A. Lazovik , P. B. Ivanov , J. C. B. Papaloizou

In the outer solar system beyond Jupiter, water ice is a dominant component of planetary bodies, and most solid objects in this region are classified as icy bodies. Icy bodies display a remarkable diversity of geological, geophysical, and…

Earth and Planetary Astrophysics · Physics 2025-12-10 Jun Kimura

In Efroimsky & Makarov (2014), we derived from the first principles a formula for the tidal heating rate in a tidally perturbed homogeneous sphere. We compared it with the formulae used in the literature, and pointed out the differences.…

Earth and Planetary Astrophysics · Physics 2014-10-09 Valeri V. Makarov , Michael Efroimsky

By means of three dimensional, high resolution hydrodynamical simulations we study the orbital evolution of weakly eccentric or inclined low-mass protoplanets embedded in gaseous discs subject to thermal diffusion. We consider both…

Earth and Planetary Astrophysics · Physics 2023-03-15 S. Cornejo , F. S. Masset , R. O. Chametla , S. Fromenteau

The Kuiper belt is a population of icy bodies beyond the orbit of Neptune. The complex orbital structure of the Kuiper belt, including several categories of objects inside and outside of resonances with Neptune, emerged as a result of…

Earth and Planetary Astrophysics · Physics 2016-07-13 David Nesvorny , David Vokrouhlicky

Various climate states at high obliquity are realized for a range of stellar irradiance using a dynamical atmosphere-ocean-sea ice climate model in an Aquaplanet configuration. Three stable climate states are obtained that differ in the…

Earth and Planetary Astrophysics · Physics 2018-09-18 Cevahir Kilic , Frank Lunkeit , Christoph C. Raible , Thomas F. Stocker

Exomoons are expected to orbit gas giant exoplanets just as moons orbit solar system planets. Tidal heating is present in solar system satellites and it can heat up their interior depending on their orbital and interior properties. We aim…

Earth and Planetary Astrophysics · Physics 2023-07-12 E. Kleisioti , D. Dirkx , M. Rovira-Navarro , M. A. Kenworthy

The Pluto-Charon system, likely formed from an impact, has reached the endpoint of its tidal evolution. During its evolution into the dual-synchronous state, the equilibrium tidal figures of Pluto and Charon would have also evolved as…

Earth and Planetary Astrophysics · Physics 2016-03-22 Amy C. Barr , Geoffrey C. Collins

Various theories have been proposed to explain the Moon's current inclined orbit. We test the viability of these theories by reconstructing the thermal-orbital history of the Moon. We build on past thermal-orbital models and incorporate the…

Earth and Planetary Astrophysics · Physics 2022-09-23 Brynna G. Downey , Francis Nimmo , Isamu Matsuyama

While planets in the solar system only have a low inclination with respect to the ecliptic there is mounting evidence that in extrasolar systems the inclination can be very high, at least for close-in planets. One process to alter the…

Earth and Planetary Astrophysics · Physics 2014-01-09 Bertram Bitsch , Willy Kley

We present a new analysis of the currently available orbital elements for the known Kuiper belt objects. In the non-resonant, main Kuiper belt we find a statistically significant relationship between an object's absolute magnitude (H) and…

Astrophysics · Physics 2009-10-31 H. F. Levison , S. A. Stern

The planetary obliquity plays a significant role in determining physical properties of planetary surfaces and climate. As direct detection is constrained due to the present observation accuracy, kinetic theories are helpful to predict the…

Earth and Planetary Astrophysics · Physics 2024-06-04 Xiumin Huang , Jianghui Ji , Shangfei Liu , Ruobing Dong , Su Wang

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…

Earth and Planetary Astrophysics · Physics 2011-07-06 Alexandre C. M. Correia , Jacques Laskar , François Farago , Gwenaël Boué

The dynamical system behaviour and thermal evolution of a homogeneous and isotropic dissipative universe are analyzed. The dissipation is driven by the bulk viscosity $\xi = \alpha \rho^s $ and the evolution of bulk viscous pressure is…

General Relativity and Quantum Cosmology · Physics 2020-03-11 Jerin Mohan N D , Krishna P B , Athira Sasidharan , Titus K Mathew

We perform one of the first studies into the nonlinear evolution of tidally excited inertial waves in a uniformly rotating fluid body, exploring a simplified model of the fluid envelope of a planet (or the convective envelope of a…

Earth and Planetary Astrophysics · Physics 2014-03-05 B. Favier , A. J. Barker , C. Baruteau , G. I. Ogilvie

Binary systems comprise approximately 15 per cent of the near-Earth asteroid population, yet thermal-infrared data are often interpreted for these bodies as if they are single objects. Thermal-IR light curves of binary asteroids (3905)…

Earth and Planetary Astrophysics · Physics 2024-09-20 Samuel L. Jackson , Benjamin Rozitis

We consider the thermal structure and radii of strongly irradiated gas giant planets over a range in mass and irradiating flux. The cooling rate of the planet is sensitive to the surface boundary condition, which depends on the detailed…

Astrophysics · Physics 2008-11-26 Phil Arras , Lars Bildsten

This chapter summarizes analytic theory and numerical calculations for the formation and collisional evolution of KBOs at 20--150 AU. We describe the main predictions of a baseline self-stirring model and show how dynamical perturbations…

Astrophysics · Physics 2007-05-23 Scott J. Kenyon , Benjamin C. Bromley , David P. O'Brien , Donald R. Davis

Orcus is an intermediate-size 1000km-scale Kuiper Belt Object in 3:2 mean-motion resonance with Neptune, in an orbit very similar to that of Pluto. We present visible and near-infrared photometry and spectroscopy obtained with the Keck…

Earth and Planetary Astrophysics · Physics 2015-05-19 Audrey Delsanti , Frédéric Merlin , Aurélie Guilbert , James Bauer , Bin Yang , Karen J. Meech