Comparing Jupiter interior structure models to Juno gravity measurements and the role of a dilute core
| Autor: | Burkhard Militzer, Steven Levin, John E. P. Connerney, S. M. Wahl, Daniel R. Reese, Yamila Miguel, Naor Movshovitz, Tristan Guillot, Scott Bolton, Yohai Kaspi, Ravit Helled, William B. Hubbard, Eli Galanti |
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| Přispěvatelé: | Joseph Louis LAGRANGE ( LAGRANGE ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Observatoire de la Côte d'Azur, Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'études spatiales et d'instrumentation en astrophysique ( LESIA ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), University of Zurich, Wahl, S M |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Equation of state
Gravity (chemistry) 010504 meteorology & atmospheric sciences 530 Physics [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph] FOS: Physical sciences Astrophysics helium 01 natural sciences Gravitation Jupiter Planet 0103 physical sciences structure 1908 Geophysics 010303 astronomy & astrophysics computer equation of state 0105 earth and related environmental sciences Envelope (waves) Earth and Planetary Astrophysics (astro-ph.EP) Physics density 1900 General Earth and Planetary Sciences formation Radius Earth mass Geophysics gravitation 10231 Institute for Computational Science hydrogen Physics::Space Physics General Earth and Planetary Sciences mass Astrophysics::Earth and Planetary Astrophysics [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Geophys.Res.Lett. Geophys.Res.Lett., 2017, 44, pp.4649-4659. 〈10.1002/2017GL073160〉 Geophys.Res.Lett., 2017, 44, pp.4649-4659. ⟨10.1002/2017GL073160⟩ |
| DOI: | 10.1002/2017GL073160〉 |
| Popis: | 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 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 $J_n$ 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 an 7--25 Earth mass of heavy elements. We discuss the current difficulties in reconciling measured $J_n$ with the equations of state, and with theory for formation and evolution of the planet. 21 Pages, 3 figures, plus Supplementary Information |
| Databáze: | OpenAIRE |
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