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arXiv · 1906.08001

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

Keren Duer·Eli Galanti·Yohai Kaspi
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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.

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Keren Duer, Eli Galanti, Yohai Kaspi. 2019-06-19. Analysis of Jupiter's deep jets combining Juno gravity and time varying magnetic field measurements. https://doi.org/10.3847/2041-8213%2Fab288e

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