Analysis of Jupiter's Deep Jets Combining Juno Gravity and Time-varying Magnetic Field Measurements

Keren Duer, Eli Galanti, Yohai Kaspi

Research output: Contribution to journalArticlepeer-review

Abstract

Jupiter's internal flow structure is still not fully known, but can be now better constrained due to Juno's highprecision 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 help to solve 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 constrains the flow decay profile. This will get us closer to answering the persistent question regarding the depth and nature of the flows on Jupiter.

Original languageEnglish
Article number22
Number of pages7
JournalAstrophysical Journal Letters
Volume879
Issue number2
DOIs
StatePublished - 10 Jul 2019

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