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Hydrogen-helium mixtures at conditions of Jupiter's interior are studied with first-principles computer simulations. The resulting equation of state (EOS) implies that Jupiter possesses a central core of 14-18 Earth masses of heavier…

Astrophysics · Physics 2009-11-13 B. Militzer , W. B. Hubbard , J. Vorberger , I. Tamblyn , S. A. Bonev

This article provides an overview of how models of giant planet interiors are constructed. We review measurements from past space missions that provide constraints for the interior structure of Jupiter. We discuss typical three-layer…

Earth and Planetary Astrophysics · Physics 2016-10-19 Burkhard Militzer , Francois Soubiran , Sean M. Wahl , William Hubbard

Interior models of Jupiter and Saturn are calculated and compared in the framework of the three-layer assumption, which rely on the perception that both planets consist of three globally homogeneous regions: a dense core, a metallic…

Astrophysics · Physics 2009-10-31 Tristan Guillot

Heavy elements, even though its smaller constituent, are crucial to understand Jupiter formation history. Interior models are used to determine the amount of heavy elements in Jupiter interior, nevertheless this range is still subject to…

Earth and Planetary Astrophysics · Physics 2016-12-14 Yamila Miguel , Tristan Guillot , Lucile Fayon

The Juno spacecraft has measured Jupiter's low-order, even gravitational moments, $J_2$--$J_8$, to an unprecedented precision, providing important constraints on the density profile and core mass of the planet. Here we report on a selection…

Earth and Planetary Astrophysics · Physics 2017-07-10 S. M. Wahl , W. B. Hubbard , B. Militzer , T. Guillot , Y. Miguel , N. Movshovitz , Y. Kaspi , R. Helled , D. Reese , E. Galanti , S. Levin , J. E. Connerney , S. J. Bolton

In anticipation of new observational results for Jupiter's axial moment of inertia and gravitational zonal harmonic coefficients from the forthcoming Juno orbiter, we present a number of preliminary Jupiter interior models. We combine…

Earth and Planetary Astrophysics · Physics 2016-04-06 W. B. Hubbard , B. Militzer

First-principle modeling of dense hydrogen is crucial in materials and planetary sciences. Despite its apparent simplicity, predicting the ionic and electronic structure of hydrogen is a formidable challenge, and it is connected with the…

Earth and Planetary Astrophysics · Physics 2026-05-20 Cesare Cozza , Kousuke Nakano , Saburo Howard , Hao Xie , Ravit Helled , Guglielmo Mazzola

The Juno mission has provided measurements of Jupiter s gravity field with an outstanding level of accuracy, leading to better constraints on the interior of the planet. Improving our knowledge of the internal structure of Jupiter is key to…

Earth and Planetary Astrophysics · Physics 2023-03-29 S. Howard , T. Guillot , M. Bazot , Y. Miguel , D. J. Stevenson , E. Galanti , Y. Kaspi , W. B. Hubbard , B. Militzer , R. Helled , N. Nettelmann , B. Idini , S. Bolton

As Juno is presently measuring Jupiter's gravitational moments to unprecedented accuracy, models for the interior structure of the planet are putted to the test. While equations of state based on first principles or ab initio simulations…

Earth and Planetary Astrophysics · Physics 2024-01-01 S. Mazevet , A. Licari , F. Soubiran

Using the helium abundance measured by Galileo in the atmosphere of Jupiter and interior models reproducing the observed external gravitational field, we derive new constraints on the composition and structure of the planet. We conclude…

Astrophysics · Physics 2009-10-30 Tristan Guillot , Daniel Gautier , William B. Hubbard

While Jupiter's massive gas envelope consists mainly of hydrogen and helium, the key to understanding Jupiter's formation and evolution lies in the distribution of the remaining (heavy) elements. Before the Juno mission, the lack of…

Giant planets are thought to have cores in their deep interiors, and the division into a heavy-element core and hydrogen-helium envelope is applied in both formation and structure models. We show that the primordial internal structure…

Earth and Planetary Astrophysics · Physics 2017-05-03 Ravit Helled , David Stevenson

The composition of Jupiter and the primordial distribution of the heavy elements are determined by its formation history. As a result, in order to constrain the primordial internal structure of Jupiter the growth of the core and the…

Earth and Planetary Astrophysics · Physics 2017-03-08 Michael Lozovsky , Ravit Helled , Eric D. Rosenberg , Peter Bodenheimer

With the goal of matching spacecraft measurements from Juno and Galileo missions, we construct ensembles of 2, 3, 4, 5, and 6 layer models for Jupiter's interior. All except our two layer models can match the planet's gravity field as…

Earth and Planetary Astrophysics · Physics 2024-01-23 Burkhard Militzer , William B. Hubbard

The Juno mission has provided an accurate determination of Jupiter's gravitational field, which has been used to obtain information about the planet's composition and internal structure. Several models of Jupiter's structure that fit the…

Earth and Planetary Astrophysics · Physics 2020-07-17 Shang-Fei Liu , Yasunori Hori , Simon Müller , Xiaochen Zheng , Ravit Helled , Doug Lin , Andrea Isella

We examine the comparative thermal evolution of Jupiter and Saturn applying recent theoretical results for helium's immiscibility in fluid metallic hydrogen. The redistribution of helium in their interiors proceeds very differently for the…

Earth and Planetary Astrophysics · Physics 2020-02-05 Christopher R. Mankovich , Jonathan J. Fortney

Probing the interiors of the gas giant planets in our Solar System is not an easy task. It requires a set of accurate measurements combined with theoretical models that are used to infer the planetary composition and its depth dependence.…

Earth and Planetary Astrophysics · Physics 2018-12-19 Ravit Helled

Jupiter's atmosphere has been observed to be depleted in helium (Yatm~0.24), suggesting active helium sedimentation in the interior. This is accounted for in standard Jupiter structure and evolution models through the assumption of an…

Earth and Planetary Astrophysics · Physics 2015-06-23 N. Nettelmann , J. J. Fortney , K. Moore , C. Mankovich

Updated formation and structure models of Jupiter predict a metal-poor envelope. This is at odds with the two to three times solar metallicity measured by the Galileo probe. Additionally, Juno data imply that water and ammonia are enriched.…

Earth and Planetary Astrophysics · Physics 2024-03-26 Simon Müller , Ravit Helled

We discuss our current understanding of the interior structure and thermal evolution of giant planets. This includes the gas giants, such as Jupiter and Saturn, that are primarily composed of hydrogen and helium, as well as the "ice…

Earth and Planetary Astrophysics · Physics 2014-11-20 Jonathan J. Fortney , Nadine Nettelmann
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