Analysis of Jupiter's deep jets combining Juno gravity and time varying magnetic field measurements

Abstract

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 the planet and its internal flows, and future magnetic measurements will allow taking another step in resolving this puzzle. In this study, we propose a new method to better constrain Jupiter's internal flow field using the Juno gravity measurements combined with the expected measurements of magnetic secular variation. Based on a combination of hydrodynamical and magnetic field considerations we show that an optimized vertical profile of the zonal flows that fits both measurements can be obtained. Incorporating the magnetic field effects on the flow better constraints the flow decay profile. This will allow getting closer to answering the long-lived question regarding the depth and nature of the flows on Jupiter.

11 pages, 5 figures, accepted to Astrophysical Journal Letters

References in corpus (5)

• Constraints on Deep-seated Zonal Winds Inside Jupiter and Saturn
• Explaining Jupiter's magnetic field and equatorial jet dynamics
• Anelastic spherical dynamos with radially variable electrical conductivity
• Decoupling Jupiter's deep and atmospheric flows using the upcoming Juno gravity measurements and a dynamical inverse model
• Constraining Jupiter's internal flows using Juno magnetic and gravity measurements

Cited by in corpus (5)

• Combined magnetic and gravity measurements probe the deep zonal flows of the gas giants
• The effect of magnetic field on the damping of slow waves in the solar corona
• Constraints on the latitudinal profile of Jupiter's deep jets
• The range of Jupiter's flow structures fitting the Juno asymmetric gravity measurements
• The Oscillatory Motion of Jupiter's Polar Cyclones Results From Vorticity Dynamics