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We know that giant planets played a crucial role in the making of our Solar System. The discovery of giant planets orbiting other stars is a formidable opportunity to learn more about these objects, what is their composition, how various…

Astrophysics · Physics 2009-11-10 Tristan Guillot

Extremely irradiated hot Jupiters, exoplanets reaching dayside temperatures ${>}$2000 K, stretch our understanding of planetary atmospheres and the models we use to interpret observations. While these objects are planets in every other…

Earth and Planetary Astrophysics · Physics 2018-10-17 Joshua D. Lothringer , Travis Barman , Tommi Koskinen

The atmospheres of ultra-hot Jupiters have been characterized in detail through recent phase curve and low- and high-resolution emission and transmission spectroscopic observations. Previous numerical studies have analyzed the effect of the…

Earth and Planetary Astrophysics · Physics 2022-07-28 Thaddeus D. Komacek , Xianyu Tan , Peter Gao , Elspeth K. H. Lee

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 aim of this short contribution is to report some preliminary results on a theoretical model of the internal structure of Titan, the satellite of Saturn. All the calculations were performed within the SK theory of dense matter. The…

Astrophysics · Physics 2011-02-19 G. Pavicic , V. Celebonovic

We present results from a set of simulations using a fully coupled three-dimensional (3D) chemistry-radiation-hydrodynamics model and investigate the effect of transport of chemical species by the large-scale atmospheric flow in hot Jupiter…

Studying the interiors of the outer planets is crucial for a comprehensive understanding of our planetary system, and provides key knowledge on the origin of the solar system, the behavior of materials at extreme conditions, the relation…

Earth and Planetary Astrophysics · Physics 2024-07-09 Ravit Helled , Saburo Howard

The core accretion model of giant planet formation has been challenged by the discovery of recycling flows between the planetary envelope and the disc that can slow or stall envelope accretion. We carry out 3D radiation hydrodynamic…

Earth and Planetary Astrophysics · Physics 2021-09-15 Zhaohuan Zhu , Yan-Fei Jiang , Hans Baehr , Andrew N. Youdin , Philip J. Armitage , Rebecca G. Martin

Turbulence is ubiquitous in Solar System planetary atmospheres. In hot Jupiter atmospheres, the combination of moderately slow rotation and thick pressure scale height may result in dynamical weather structures with unusually large,…

Astrophysics · Physics 2009-11-13 Emily Rauscher , Kristen Menou , James Y-K. Cho , Sara Seager , Brad Hansen

Recent laser-shock experiments on an H--He mixture containing 11~$\%$ helium (atomic fraction) have suggested the presence of an immiscibility region inside Jupiter. Reflectivity measurements were used as the primary diagnostic of H--He…

Other Condensed Matter · Physics 2026-05-05 Ammar A. Ellaboudy , Valentin V. Karasiev , S. X. Hu

We present highlights from a large set of simulations of a hot Jupiter atmosphere, nominally based on HD 209458b, aimed at exploring both the evolution of the deep atmosphere, and the acceleration of the zonal flow or jet. We find the…

Traditional thermal evolution models of giant planets employ arbitrary initial conditions selected more for computational expediency than physical accuracy. Since the initial conditions are eventually forgotten by the evolving planet, this…

Astrophysics · Physics 2008-11-26 M. S. Marley , J. J. Fortney , O. Hubickyj , P. Bodenheimer , J. J. Lissauer

We present a review of Saturn's interior structure and thermal evolution, with a particular focus on work in the past 5 years. Data from the Cassini mission, including a precise determination of the gravity field from the Grand Finale…

Recent measurements of Jupiter's gravitational moments by the Juno spacecraft and seismology of Saturn's rings suggest that the primordial composition gradients in the deep interior of these planets have persisted since their formation. One…

Earth and Planetary Astrophysics · Physics 2023-11-08 J. R. Fuentes , Evan H. Anders , Andrew Cumming , Bradley W. Hindman

The radii of hot Jupiters are still not fully understood and all of the proposed explanations are based on the idea that these close-in giant planets possess hot interiors. We approach the radius anomaly problem by adopting a statistical…

Earth and Planetary Astrophysics · Physics 2021-01-20 Paula Sarkis , Christoph Mordasini , Thomas Henning , Gabriel D. Marleau , Paul Mollière

Jupiter's atmosphere is enriched in C, N, S, P, Ar, Kr and Xe with respect to solar abundances by a factor of ~3. Gas Giant envelopes are mainly enriched through the dissolution of solids in the atmosphere, and this constant enrichment…

Earth and Planetary Astrophysics · Physics 2019-11-06 Karin I. Oberg , Robin Wordsworth

We explore the change in Jupiter's normalized axial moment of inertia (NMOI) assuming that Jupiter undergoes core erosion. It is found that Jupiter's contraction combined with an erosion of 20 M_Earth from a primordial core of 30 M_Earth…

Earth and Planetary Astrophysics · Physics 2015-06-04 Ravit Helled

The improved description of the planets' interior is provided. We examine the modified gravity effects on the Earth-like planets composed of the iron core and silicate mantle. We confirm that the mass-radius relations, as well as density…

General Relativity and Quantum Cosmology · Physics 2022-08-18 Aleksander Kozak , Aneta Wojnar

We show that moderate deviations from the Maxwell-Boltzmann energy distribution can increase deuterium reaction rates enough to contribute to the heating of Jupiter. These deviations are compatible with the violation of extensivity expected…

Plasma Physics · Physics 2011-01-04 Massimo Coraddu , Marcello Lissia , Giuseppe Mezzorani , Piero Quarati

A wealth of Earth-sized exoplanets will be discovered in the coming years, proving a large pool of candidates from which the targets for the search for life beyond the Solar system will be chosen. The target selection process will require…

Earth and Planetary Astrophysics · Physics 2020-01-08 Jonathan Horner , Pam Vervoort , Stephen R. Kane , Alma Y. Ceja , David Waltham , James Gilmore , Sandra Kirtland Turner