The effect of differential rotation on Jupiter's low-degree even gravity moments

Y. Kaspi, T. Guillot, E. Galanti, Y. Miguel, R. Helled, William B. Hubbard, B. Militzer, S. M. Wahl, S. Levin, J. E.P. Connerney, S. J. Bolton

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The close-by orbits of the ongoing Juno mission allow measuring with unprecedented accuracy Jupiter's low-degree even gravity moments J2, J4, J6, and J8. These can be used to better determine Jupiter's internal density profile and constrain its core mass. Yet the largest unknown on these gravity moments comes from the effect of differential rotation, which gives a degree of freedom unaccounted for by internal structure models. Here considering a wide range of possible internal flow structures and dynamical considerations, we provide upper bounds to the effect of dynamics (differential rotation) on the low-degree gravity moments. In light of the recent Juno gravity measurements and their small uncertainties, this allows differentiating between the various models suggested for Jupiter's internal structure.

Original languageEnglish (US)
Pages (from-to)5960-5968
Number of pages9
JournalGeophysical Research Letters
Volume44
Issue number12
DOIs
StatePublished - Jun 28 2017

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Jupiter (planet)
Jupiter
gravity
gravitation
moments
Juno mission
internal flow
flow structure
degrees of freedom
orbits
effect
profiles

Keywords

  • atmospheric dynamics
  • differential rotation
  • gravity
  • gravity moments
  • Juno
  • Jupiter

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Kaspi, Y., Guillot, T., Galanti, E., Miguel, Y., Helled, R., Hubbard, W. B., ... Bolton, S. J. (2017). The effect of differential rotation on Jupiter's low-degree even gravity moments. Geophysical Research Letters, 44(12), 5960-5968. https://doi.org/10.1002/2017GL073629

The effect of differential rotation on Jupiter's low-degree even gravity moments. / Kaspi, Y.; Guillot, T.; Galanti, E.; Miguel, Y.; Helled, R.; Hubbard, William B.; Militzer, B.; Wahl, S. M.; Levin, S.; Connerney, J. E.P.; Bolton, S. J.

In: Geophysical Research Letters, Vol. 44, No. 12, 28.06.2017, p. 5960-5968.

Research output: Contribution to journalArticle

Kaspi, Y, Guillot, T, Galanti, E, Miguel, Y, Helled, R, Hubbard, WB, Militzer, B, Wahl, SM, Levin, S, Connerney, JEP & Bolton, SJ 2017, 'The effect of differential rotation on Jupiter's low-degree even gravity moments', Geophysical Research Letters, vol. 44, no. 12, pp. 5960-5968. https://doi.org/10.1002/2017GL073629
Kaspi, Y. ; Guillot, T. ; Galanti, E. ; Miguel, Y. ; Helled, R. ; Hubbard, William B. ; Militzer, B. ; Wahl, S. M. ; Levin, S. ; Connerney, J. E.P. ; Bolton, S. J. / The effect of differential rotation on Jupiter's low-degree even gravity moments. In: Geophysical Research Letters. 2017 ; Vol. 44, No. 12. pp. 5960-5968.
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