Pensionerov et al Published on line (JGR 28 March 2019).pdf (8.24 MB)
Model of Jupiter's Current Sheet With a Piecewise Current Density
journal contribution
posted on 2019-06-21, 09:22 authored by IA Pensionerov, II Alexeev, ES Belenkaya, JEP Connerney, SWH CowleyWe develop a new empirical model of Jupiter's equatorial current sheet or magnetodisk, constructed by combining successful elements from several previous models. The new model employs a disk-like current of constant north-south thickness in which the current density is piecewise dependent on the distance ρ from Jupiter's dipole axis, proportional to ρ −1 at distances between ∼7 and ∼30 R J and again at distances between ∼50 and ∼95 R J , and to be continuous in value but proportional to ρ −2 at distances between. For this reason we term the model the Piecewise Current Disk model. The model also takes into account the curvature of the magnetodisk with distance and azimuth due to finite radial propagation speed and solar wind effects. It is taken to be applicable in the radial distance range between ∼5 and ∼60 R J . Optimized parameters have been determined for Juno magnetic field data obtained on Perijove-01, with the model showing overall the lowest root-mean-square deviation from the data compared with similarly optimized earlier models.
Funding
Work at the Federal State Budget Educational Institution of Higher Education M.V. Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics (SINP MSU), was partially supported by the Ministry of Education and Science of the Russian Federation (grant RFMEFI61617X0084). Work at the University of Leicester was supported by STFC Consolidated Grant ST/N000749/1. The Juno magnetometer data were obtained from the Planetary Data System (PDS; https://pds-ppi.igpp.ucla.edu). We are grateful to the Juno team for making the magnetic field data available (FGM instrument scientist J. E. P. Connerney; principal investigator of Juno mission Scott J. Bolton).
History
Citation
Journal of Geophysical Research: Space Physics, 2019, 124(3), pp. 1843-1854Author affiliation
/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and AstronomyVersion
- VoR (Version of Record)
Published in
Journal of Geophysical Research: Space PhysicsPublisher
American Geophysical Union (AGU), Wileyissn
2169-9380eissn
2169-9402Acceptance date
2019-02-25Copyright date
2019Available date
2019-06-21Publisher DOI
Publisher version
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JA026321Notes
Source code for the PCD model is available at the website (https://github.com/gasgiant/jfield).Language
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