2018/03/09 by J. E. P. Connerney, Stavros Kotsiaros, R. J. Oliversen +9 · 2 citations
Physics and Astronomy · Mathematics · #Astro and Planetary Science #Planetary Science and Exploration #Stellar, planetary, and galactic studies #Jupiter (rocket family) #Physics #Astronomy #Field (mathematics) #Magnetic field #Astrobiology #Geophysics #Geology #Spacecraft #Mathematics
paper · pdf · doi:10.1002/2018gl077312
openalex publication_date 2018/03/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Abstract A spherical harmonic model of the magnetic field of Jupiter is obtained from vector magnetic field observations acquired by the Juno spacecraft during its first nine polar orbits about the planet. Observations acquired during eight of these orbits provide the first truly global coverage of Jupiter's magnetic field with a coarse longitudinal separation of ~45° between perijoves. The magnetic field is represented with a degree 20 spherical harmonic model for the planetary (“internal”) field, combined with a simple model of the magnetodisc for the field (“external”) due to distributed magnetospheric currents. Partial solution of the underdetermined inverse problem using generalized inverse techniques yields a model (“Juno Reference Model through Perijove 9”) of the planetary magnetic field with spherical harmonic coefficients well determined through degree and order 10, providing the first detailed view of a planetary dynamo beyond Earth.