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Related papers: Interior Models of Uranus and Neptune

200 papers

Uranus and Neptune are still poorly understood. Their gravitational fields, rotation periods, atmosphere dynamics, and internal structures are not well determined. In this paper we present empirical structure models of Uranus and Neptune…

Earth and Planetary Astrophysics · Physics 2022-03-14 Benno A. Neuenschwander , Ravit Helled

The internal structures and compositions of Uranus and Neptune are not well constrained due to the uncertainty in rotation period and flattening, as well as the relatively large error bars on the gravitational coefficients. While Uranus and…

Earth and Planetary Astrophysics · Physics 2015-06-11 Morris Podolak , Ravit Helled

Although Uranus and Neptune are commonly classified as ice giants, their exact compositions remain poorly constrained. Recent studies of outer Solar System bodies challenge the traditional view that these planets are primarily…

Earth and Planetary Astrophysics · Physics 2026-05-08 Vanesa Ramirez , Yamila Miguel , Saburo Howard

We present a new framework for constructing agnostic and yet physical models for planetary interiors and apply it to Uranus and Neptune. Unlike previous research that either impose rigid assumptions or rely on simplified empirical profiles,…

Earth and Planetary Astrophysics · Physics 2026-01-14 Luca Morf , Ravit Helled

We present updated non-adiabatic and inhomogeneous evolution models for Uranus and Neptune, employing an interior composition of methane, ammonia, water, and rocks. Following formation trends of the gas giants, Uranus and Neptune formation…

Earth and Planetary Astrophysics · Physics 2025-07-28 Roberto Tejada Arevalo

Uranus and Neptune form a distinct class of planets in our solar system. Given this fact, and ubiquity of similar-mass planets in other planetary systems, it is essential to understand their interior structure and composition. However,…

Earth and Planetary Astrophysics · Physics 2021-08-04 Ravit Helled , Jonathan J. ~Fortney

Since the Voyager fly-bys of Uranus and Neptune, improved gravity field data have been derived from long-term observations of the planets' satellite motions, and modified shape and solid-body rotation periods were suggested. A faster…

Earth and Planetary Astrophysics · Physics 2015-06-05 N. Nettelmann , R. Helled , J. J. Fortney , R. Redmer

Uranus and Neptune, the so-called "ice giants", represent a fascinating class of planets. They are the outermost planets in the solar system with intermediate masses/sizes, complex non-polar magnetic fields, strong atmospheric winds, and…

Earth and Planetary Astrophysics · Physics 2025-04-28 Ravit Helled

Uranus and Neptune share properties that are distinct from the other giant planets in the solar system, but they are also distinct from one another, particularly in their relative internal heat flux. Not only does Neptune emit about ten…

Earth and Planetary Astrophysics · Physics 2021-11-11 Dustin J. Hill , Krista M. Soderlund , Stephen L. W. McMillan

The interior composition and structure of Uranus are ambiguous. It is unclear whether Uranus is composed of fully differentiated layers dominated by an icy mantle or has smooth compositional gradients. The Uranus Orbiter and Probe (UOP),…

Earth and Planetary Astrophysics · Physics 2024-12-10 Zifan Lin , Sara Seager , Benjamin P. Weiss

There are still many open questions regarding the nature of Uranus and Neptune, the outermost planets in the Solar System. In this review we summarize the current-knowledge about Uranus and Neptune with a focus on their composition and…

Earth and Planetary Astrophysics · Physics 2020-04-15 Ravit Helled , Nadine Nettelmann , Tristan Guillot

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

New equations of state (EOS) for hydrogen, helium, and compounds containing heavier elements are used to construct models for the structures of the planets Jupiter and Saturn. Good agreement with the gravitational moments J2 and J4 is…

Earth and Planetary Astrophysics · Physics 2013-07-12 Gerald I. Kerley

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

Despite many similarities, there are significant observed differences between Uranus and Neptune: while Uranus is tilted and has a regular set of satellites, suggesting their accretion from a disk, Neptune's moons are irregular and are…

Earth and Planetary Astrophysics · Physics 2020-01-08 Christian Reinhardt , Alice Chau , Joachim Stadel , Ravit Helled

It has been a common assumption of interior models that the outer planets of our solar system are convective, and that the internal temperature distributions are therefore adiabatic. This assumption is also often applied to exoplanets.…

Earth and Planetary Astrophysics · Physics 2019-06-05 Morris Podolak , Ravit Helled , Gerald Schubert

Both Uranus and Neptune are thought to have strong zonal winds with velocities of several hundred meters per second. These wind velocities, however, assume solid-body rotation periods based on Voyager 2 measurements of periodic variations…

Earth and Planetary Astrophysics · Physics 2015-05-19 Ravit Helled , John D. Anderson , Gerald Schubert

Uranus and Neptune are commonly considered ice giants, and it is often assumed that, in addition to a solar mix of hydrogen and helium, they contain roughly twice as much water as rock. This classical picture has led to successful models of…

Earth and Planetary Astrophysics · Physics 2024-07-11 Uri Malamud , Morris Podolak , Joshua Podolak , Peter Bodenheimer

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

This study, placed in the context of the preparation for the Uranus Orbiter Probe mission, aims to predict the bulk volatile compositions of Uranus and Neptune. Using a protoplanetary disk model, it examines the evolution of trace species…

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