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While magnetism in exoplanets remains largely unknown, Hot Jupiters have been considered as natural candidates to harbour intense magnetic fields, both due to their large masses and their high energy budgets coming from irradiation as a…

Earth and Planetary Astrophysics · Physics 2023-08-09 Clàudia Soriano-Guerrero , Daniele Viganò , Rosalba Perna , Taner Akgün , Carlos Palenzuela

Observations of Jupiter's gravity field by Juno have revealed surprisingly small values for the high order gravitational moments, considering the abundances of heavy elements measured by Galileo 20 years ago. The derivation of recent…

Earth and Planetary Astrophysics · Physics 2019-02-27 Florian Debras , Gilles Chabrier

The Juno mission has revolutionized and challenged our understanding of Jupiter. As Juno transitioned to its extended mission, we review the major findings of Jupiter's internal structure relevant to understanding Jupiter's formation and…

Jupiter's bright persistent polar aurora and Earth's dark polar region indicate that the planets' magnetospheric topologies are very different. High-resolution global simulations show that the reconnection rate at the interface between the…

In this paper we consider the effect of a self-consistently computed magnetosdisc field structure on the magnetosphere-ionosphere coupling current system at Jupiter. We find that the azimuthal current intensity, and thus the stretching of…

Space Physics · Physics 2015-05-30 J. D. Nichols

A series of numerical simulations of the dynamo process operating inside gas giant planets has been performed. We use an anelastic, fully nonlinear, three-dimensional, benchmarked MHD code to evolve the flow, entropy and magnetic field. Our…

Earth and Planetary Astrophysics · Physics 2018-01-11 Wieland Dietrich , Chris. A. Jones

The magnetization of solar and extrasolar gas giants is critically dependent on electronic and mass transport coefficients of their convective fluid interiors. We analyze recent laboratory experimental results on metallic hydrogen to derive…

Earth and Planetary Astrophysics · Physics 2018-07-20 Mohamed Zaghoo , G. W. Collins

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

Jupiter's atmosphere-interior is a coupled fluid dynamical system strongly influenced by the rapid background rotation. While the visible atmosphere features east-west zonal winds on the order of 100 m/s (Tollefson et al. 2017), zonal flows…

Earth and Planetary Astrophysics · Physics 2023-12-11 Hao Cao , Jeremy Bloxham , Ryan S. Park , Burkhard Militzer , Rakesh K. Yadav , Laura Kulowski , David J. Stevenson , Scott J. Bolton

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…

We present a simplified model to study the orbital evolution of a young hot Jupiter inside the magnetospheric cavity of a proto-planetary disk. The model takes into account the disk locking of stellar spin as well as the tidal and magnetic…

Earth and Planetary Astrophysics · Physics 2014-11-20 Shih-Hsin Chang , Pin-Gao Gu , Peter Bodenheimer

Context. The Juno spacecraft has obtained highly accurate tidal Love numbers, which provide important constraints on the tidal response and interior structure of Jupiter. Aims. In order to exploit these observations, it is necessary to…

Earth and Planetary Astrophysics · Physics 2023-03-08 Yufeng Lin

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 Jovian magnetosphere is complicated by the multiple plasma sources and ion species present within it, as well as fast rotation with its dipole axis titled from its rotational axis. To date global models of Jovian have neglected the…

Earth and Planetary Astrophysics · Physics 2016-07-11 Robert M. Winglee , Erika M. Harnett

Hot Jupiters receive strong stellar irradiation, producing equilibrium temperatures of $1000 - 2500 \ \mathrm{Kelvin}$. Incoming irradiation directly heats just their thin outer layer, down to pressures of $\sim 0.1 \ \mathrm{bars}$. In…

Earth and Planetary Astrophysics · Physics 2020-05-05 Thaddeus D. Komacek , Andrew N. Youdin

The zonal flow in Jupiter's upper troposphere is organized into alternating retrograde and prograde jets, with a prograde (superrotating) jet at the equator. Existing models posit as the driver of the flow either differential radiative…

Astrophysics · Physics 2015-05-13 Tapio Schneider , Junjun Liu

Deciphering the flow below the cloud-level of Jupiter remains a critical milestone in understanding Jupiter's internal structure and dynamics. The expected high-precision Juno measurements of both the gravity field and the magnetic field…

Earth and Planetary Astrophysics · Physics 2019-02-13 Eli Galanti , Hao Cao , Yohai Kaspi

Jupiter's internal flow structure is still not fully known, but can be now better constrained due to Juno's high-precision measurements. The recently published gravity and magnetic field measurements have led to new information regarding…

Earth and Planetary Astrophysics · Physics 2019-07-17 Keren Duer , Eli Galanti , Yohai Kaspi

(Abridged) The upper atmospheres of close-in gas giant exoplanets are subjected to intense heating/tidal forces from their parent stars. Atomic/ionized hydrogen (H) layers are sufficiently rarefied that magnetic pressure may dominate gas…

Earth and Planetary Astrophysics · Physics 2015-05-20 George B. Trammell , Phil Arras , Zhi-Yun Li

The Juno spacecraft provides a unique opportunity to explore the mechanisms generating Jupiter's aurorae. Past analyses of Juno data immensely advanced our understanding of its auroral acceleration processes, however, few studies utilized…

Earth and Planetary Astrophysics · Physics 2025-07-04 A. Salveter , J. Saur , G. Clark , A. Sulaiman , B. H. Mauk , J. E. P. Connerney , B. Bonfond