The landscape of Saturn's internal magnetic field from the Cassini Grand Finale
Hao Cao, Michele K. Dougherty, Gregory J. Hunt, Gabrielle Provan,, Stanley W.H. Cowley, Emma J. Bunce, David J. Stevenson

TL;DR
This paper analyzes Saturn's internal magnetic field using Cassini data, revealing an exceptionally axisymmetric field with subtle features and implications for Saturn's internal structure and dynamo processes.
Contribution
It provides the first detailed characterization of Saturn's internal magnetic field from Cassini's Grand Finale data, highlighting its axisymmetry and potential layered dynamo mechanisms.
Findings
Saturn's magnetic field is nearly perfectly axisymmetric with a tilt less than 0.007 degrees.
The magnetic equator is shifted northward by approximately 0.0468 planetary radii.
Small-scale magnetic features suggest a shallow secondary dynamo layer.
Abstract
The Cassini mission entered the Grand Finale phase in April 2017 and executed 22.5 highly inclined, close-in orbits around Saturn before diving into the planet on September 15th 2017. Here we present our analysis of the Cassini Grand Finale magnetometer (MAG) dataset, focusing on Saturn's internal magnetic field. These measurements demonstrate that Saturn's internal magnetic field is exceptionally axisymmetric, with a dipole tilt less than 0.007 degrees (25.2 arcsecs). Saturn's magnetic equator was directly measured to be shifted northward by ~ 0.0468 +/- 0.00043 (1-sigma) , 2820 +/- 26 km, at cylindrical radial distances between 1.034 and 1.069 from the spin-axis. Although almost perfectly axisymmetric, Saturn's internal magnetic field exhibits features on many characteristic length scales in the latitudinal direction. Examining Br at the a=0.75 , c=0.6993 …
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