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200 papers

55 Cancri e is a $\sim$8 Gyr rocky world (1.95 $R_\oplus$, 8.8 $M_\oplus$) orbiting a K-type star. JWST observations suggest a carbon-dominated atmosphere (CO$_2$/CO) over a global magma ocean ($>$3000 K). We suggest that any…

Earth and Planetary Astrophysics · Physics 2026-02-02 Barron K. Nguyen , Laura K. Schaefer , Fei Dai , Héctor E. Delgado-Díaz

We study the combined effects of relaxation, tidal heating and binary heating on globular cluster evolution, exploring the physical consequences of external effects and examining evolutionary trends in the Milky Way population. Our analysis…

Astrophysics · Physics 2015-06-24 C. Murali , M. D. Weinberg

There is compelling evidence for subsurface water oceans among the three outer Galilean satellites, and evidence for an internal magma ocean in the innermost moon, Io. Tidal forces from Jupiter periodically deform these bodies, causing…

Earth and Planetary Astrophysics · Physics 2020-08-10 Hamish C. F. C. Hay , Antony Trinh , Isamu Matsuyama

The evolution of many close binary and multiple star systems is defined by phases of mass exchange and interaction. As these systems evolve into contact, tidal dissipation is not always sufficient to bring them into circular, synchronous…

Solar and Stellar Astrophysics · Physics 2023-04-19 Morgan MacLeod , Michelle Vick , Abraham Loeb

In order to characterize the global circulation of the subsurface ocean of Jovian and Saturnian moons, we analyze the properties of 21 three-dimensional simulations of Boussinesq thermal convection in a rapidly rotating spherical shell.…

Fluid Dynamics · Physics 2024-03-12 S. Cabanes , T. Gastine , A. Fournier

We investigate a simple two-layered viscoelastic rheological model capable of replicating the forced librations of an icy moon with a subsurface ocean. We show that the model, composed only of a prestressed icy crust lying over an effective…

Earth and Planetary Astrophysics · Physics 2025-11-19 Yeva Gevorgyan

Close-in planets undergo strong tidal interactions with the parent star that modify their spins and orbits. In the two-body problem, the final stage for tidal evolution is the synchronisation of the rotation and orbital periods, and the…

Earth and Planetary Astrophysics · Physics 2023-07-19 Ema F. S. Valente , Alexandre C. M. Correia

Miranda has a unusually high inclination ($I=4.338^\circ$), and its surface reveals signs of past endogenic activity. Investigations of the dynamical aspects of its orbital evolution suggest probable resonant processes, in particular with…

Dynamical Systems · Mathematics 2014-01-21 Emilie Verheylewegen , Özgür Karatekin , Benoît Noyelles

Recent work suggests that many short-period super-Earth and sub-Neptune planets may have significant spin axis tilts ("obliquities"). When planets are locked in high-obliquity states, the tidal dissipation rate may increase by several…

Earth and Planetary Astrophysics · Physics 2019-12-04 Sarah Millholland

We investigate the epicyclic motion of stars escaping from star clusters. Using streaklines, we visualise the path of escaping stars and show how epicyclic motion leads to over- and underdensities in tidal tails of star clusters moving on…

Astrophysics of Galaxies · Physics 2015-06-03 Andreas H. W. Kuepper , Richard R. Lane , Douglas C. Heggie

All the studies of the interaction between tides and a convective flow assume that the large scale tides can be described as a mean shear flow which is damped by small scale fluctuating convective eddies. The convective Reynolds stress is…

Solar and Stellar Astrophysics · Physics 2021-01-26 Caroline Terquem

A tidal disruption event (TDE) takes place when a star passes near enough to a massive black hole to be disrupted. About half the star's matter is given elliptical trajectories with large apocenter distances, the other half is unbound. To…

High Energy Astrophysical Phenomena · Physics 2015-04-08 Tsvi Piran , Gilad Svirski , Julian Krolik , Roseanne M. Cheng , Hotaka Shiokawa

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…

Earth and Planetary Astrophysics · Physics 2014-10-21 M. Guenel , S. Mathis , F. Remus

Our knowledge of Saturns neutral thermosphere is far superior to that of the other giant planets due to Cassini Ultraviolet Imaging Spectrograph (UVIS) observations of 15 solar occultations and 26 stellar occultations analyzed to date.…

Earth and Planetary Astrophysics · Physics 2016-10-26 Darrell F. Strobel , Tommi Koskinen , Ingo Mueller-Wodarg

We present a new empirical calibration of equilibrium tidal theory for extrasolar planet systems, extending a prior study by incorporating detailed physical models for the internal structure of planets and host stars. The resulting strength…

Earth and Planetary Astrophysics · Physics 2015-06-04 Brad Hansen

Close-in extrasolar gas giants -- the hot Jupiters -- display departures in radius above the zero-temperature solution, the radius excess, that are anomalously high. The radius excess of hot Jupiters follows a relatively close relation with…

Earth and Planetary Astrophysics · Physics 2013-04-16 Aristotle Socrates

Saturn's moon Enceladus is an exciting destination for future exploration missions due to the scientifically interesting geyser region located on its South pole. In this work, we compile the different types of science orbit configurations…

Earth and Planetary Astrophysics · Physics 2025-10-15 Spencer Boone , Joan Pau Sanchez Cuartialles , Stéphanie Lizy-Destrez

Tidal dissipation within a short-period transiting extrasolar planet perturbed by a companion object can drive orbital evolution of the system to a so-called tidal fixed point, in which the apsidal lines of the transiting planet and its…

Earth and Planetary Astrophysics · Physics 2015-05-13 Konstantin Batygin , Peter Bodenheimer , Gregory Laughlin

Tidal effects in planetary systems are the main driver in the orbital migration of natural satellites. They result from physical processes occurring deep inside celestial bodies, whose effects are rarely observable from surface imaging. For…

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, orbital resonances and satellite tides. Then we address in…

Earth and Planetary Astrophysics · Physics 2024-01-30 Matija Ćuk , Maryame El Moutamid , Giacomo Lari , Marc Neveu , Francis Nimmo , Benoît Noyelles , Alyssa Rhoden , Melaine Saillenfest