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In the core accretion model of giant planet formation, the late stages of runaway growth are regulated by the hydrodynamic infall of gas from the protoplanetary disk. For a subset of planet-disk pairings, this scenario is analogous to the…

Earth and Planetary Astrophysics · Physics 2026-03-24 Avery Bailey , Kaitlin Kratter , Andrew Youdin

Accretion and migration usually proceeds concurrently for giant planet formation in the natal protoplanetary disks. Recent works indicate that the concurrent accretion onto a giant planet imposes significant impact on the planetary…

Earth and Planetary Astrophysics · Physics 2025-01-28 Hening Wu , Ya-ping Li

Context. The origin of giant planets at moderate separations $\simeq$$1$$-$$10$ au is still not fully understood because numerical studies of Type II migration in protoplanetary disks often predict a decay of the semi-major axis that is too…

Earth and Planetary Astrophysics · Physics 2020-10-28 Ondřej Chrenko , David Nesvorný

The steady state numerical solution and two dimensional hydrodynamic calculations of supergalactic winds generated by super star clusters are presented. Two possible regimes: quasi-adiabatic and strongly radiative are thoroughly discussed.…

Astrophysics · Physics 2009-11-07 S. Silich , G. Tenorio-Tagle , C. Munoz-Tunon

The cause of hot Jupiter radius inflation, where giant planets with $T_{\rm eq}$ $>1000$ K are significantly larger than expected, is an open question and the subject of many proposed explanations. Rather than examine these models…

Earth and Planetary Astrophysics · Physics 2018-05-16 Daniel P. Thorngren , Jonathan J. Fortney

It is important that we are able to accurately model the atmospheres of (exo)planets. This is because atmospheres play a central role in setting a planet's thermochemical environment at a given point in time, and also in regulating how it…

Instrumentation and Methods for Astrophysics · Physics 2025-06-03 Harrison Nicholls , Raymond Pierrehumbert , Tim Lichtenberg

Revealing the internal composition and structure of giant planets is fundamental for understanding planetary formation. However, the bulk composition can only be inferred through interior models. As a result, advancements in modelling…

Earth and Planetary Astrophysics · Physics 2025-01-08 Saburo Howard , Ravit Helled , Simon Müller

The zonal winds on the surfaces of giant planets vary with latitude. Jupiter and Saturn, for example, have several bands of alternating eastward (prograde) and westward (retrograde) jets relative to the angular velocity of their global…

Astrophysics · Physics 2009-11-13 Gary A. Glatzmaier , Martha Evonuk , Tamara M. Rogers

We have developed a formalism to study non-adiabatic, non-radial oscillations of non-rotating compact stars in the frequency domain, including the effects of thermal diffusion in the framework of general relativistic perturbation theory.…

General Relativity and Quantum Cosmology · Physics 2009-11-10 L. Gualtieri , J. A. Pons , G. Miniutti

We present an analytic 1-D radiative-convective model of the thermal structure of planetary atmospheres. Our model assumes that thermal radiative transfer is gray and can be represented by the two-stream approximation. Model atmospheres are…

Earth and Planetary Astrophysics · Physics 2012-09-11 Tyler D. Robinson , David C. Catling

The success of adiabatic quantum computation (AQC) depends crucially on the ability to maintain the quantum computer in the ground state of the evolution Hamiltonian. The computation process has to be sufficiently slow as restricted by the…

Quantum Physics · Physics 2008-07-31 Man-Hong Yung

The characterisation of giant exoplanets is crucial to constrain giant planet formation and evolution theory and for putting the solar-system's giant planets in perspective. Typically, mass-radius (M-R) measurements of moderately irradiated…

Earth and Planetary Astrophysics · Physics 2023-05-01 Simon Müller , Ravit Helled

Aims. In the context of the core instability model, we present calculations of in situ giant planet formation. The oligarchic growth regime of solid protoplanets is the model adopted for the growth of the core. Methods. The full…

Astrophysics · Physics 2009-11-13 A. Fortier , O. G. Benvenuto , A. Brunini

The evolution of stars and planets is mostly controlled by the properties of their atmosphere. This is particularly true in the case of exoplanets close to their stars, for which one has to account both for an (often intense) irradiation…

Earth and Planetary Astrophysics · Physics 2011-03-02 Tristan Guillot

3D non-abelian anyons have been theoretically proposed to exist in heterostructures composed of type II superconductors and topological insulators. We use realistic material parameters for a device derived from Bi$_2$Se$_3$ to…

Superconductivity · Physics 2011-10-19 Seiji J. Yamamoto , Michael Freedman , Kun Yang

We include the effect of evaporation in our evolutionary calculations of close-in giant planets, based on a recent model for thermal evaporation taking into account the XUV flux of the parent star (Lammer et al. 2003). Our analysis leads to…

Astrophysics · Physics 2009-11-10 I. Baraffe , F. Selsis , G. Chabrier , T. S. Barman , F. Allard , P. H. Hauschildt , H. Lammer

We study water-hydrogen mixtures under planetary interior conditions using ab initio molecular dynamics simulations. We determine the thermodynamic properties of various water-hydrogen mixing ratios at temperatures of 2000 and 6000 K for…

Earth and Planetary Astrophysics · Physics 2015-10-28 Francois Soubiran , Burkhard Militzer

A model of spheroidal particles is used to calculate the steady-state temperature of dust grains immersed in the interstellar radiation field. It is found that the temperature of non-spherical grains with the aspect ratios a/b <= 2 deviates…

Astrophysics · Physics 2007-05-23 N. V. Voshchinnikov , D. A. Semenov , Th. Henning

Discs in binaries have a complex behavior because of the perturbations of the companion star. Planet formation in binary-star systems both depend on the companion star parameters and on the properties of the circumstellar disc. An eccentric…

Earth and Planetary Astrophysics · Physics 2015-06-03 F. Marzari , C. Baruteau , H. Scholl , P. Thebault

Giant planets acquire gas, ices and rocks during the early formation stages of planetary systems and thus inform us on the formation process itself. Proceeding from inside out, examining the connections between the deep interiors and the…

Earth and Planetary Astrophysics · Physics 2022-05-10 Tristan Guillot , Leigh N. Fletcher , Ravit Helled , Masahiro Ikoma , Michael R. Line , Vivien Parmentier
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