A New Model of Jupiter's Magnetic Field From Juno's First Nine Orbits

By J. Connerney, S. Kotsiaros, R. Oliversen, J. Espley, J. Joergensen, P. Joergensen, J. Merayo, M. Herceg, J. Bloxham, K. Moore and 2 more. 2018

293 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/c27ab8583b0f2673108ded4a2d79fcdfdbd31fb7

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Citations in the corpus

• New Models of Jupiter in the Context of Juno and Galileo (2019, background): “4 Magnetic field Although the magnetic field at the surface of Jupiter has been shown to vary with latitude and longitude within an order of magnitude (Connerney et al., 2018), the leading feature is a dipolar field with moment M = 4.”