Comparing Jupiter interior structure models to Juno gravity measurements and the role of a dilute core
By S. Wahl, W. Hubbard, B. Militzer, T. Guillot, Y. Miguel, N. Movshovitz, Y. Kaspi, R. Helled, D. Reese, E. Galanti and 3 more. 2017
208 citations recorded by the source corpus.
The Juno spacecraft has measured Jupiter's low‐order, even gravitational moments, J2–J8, to an unprecedented precision, providing important constraints on the density profile and core mass of the planet. Here we report on a selection of interior models based on ab initio computer simulations of hydrogen‐helium mixtures. We demonstrate that a dilute core, expanded to a significant fraction of the planet's radius, is helpful in reconciling the calculated Jn with Juno's observations. Although model predictions are strongly affected by the chosen equation of state, the prediction of an enrichment of Z in the deep, metallic envelope over that in the shallow, molecular envelope holds. We estimate Jupiter's core to contain a 7–25 Earth mass of heavy elements. We discuss the current difficulties in reconciling measured Jn with the equations of state and with theory for formation and evolution of the planet.
Subfields: Astronomy and Astrophysics
View Paper: https://www.semanticscholar.org/paper/b9207efa10f7daf1b923ef007a3d8077a48a1373
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In Astronomy and Astrophysics
Citations in the corpus
- New Models of Jupiter in the Context of Juno and Galileo (2019, methodology): “These latter are not able to match both the values of the gravitational moments and the external abundance of metals, which confirms the analysis of Wahl et al. (2017).”
- Origin and evolution of the atmospheres of early Venus, Earth and Mars (2018, background): “…adiabatic temperature profile that likely characterizes a turbulent and well-mixed magma ocean is steeper than the slopes of the liquidus and solidus, the solidification of a magma ocean likely begins at its bottom and proceeds upwards (e.g. Walker et al. 1975; Solomatov 2000; Elkins-Tanton 2012).”