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A Revised Model of Jupiter's Inner Electron Belts: Updating the Divine Radiation ModelIn 1983, Divine presented a comprehensive model of the Jovian charged particle environment that has long served as a reference for missions to Jupiter. However, in situ observations by Galileo and synchrotron observations from Earth indicate the need to update the model in the inner radiation zone. Specifically, a review of the model for 1 MeV < E < 100 MeV trapped electrons suggests that, based on the new synchrotron observations, the pitch angle distributions within L < 4 need to be updated by introducing two additional components: one near the Jovian magnetic equator and one at high magnetic latitudes. We report modifications to the model that reproduce these observations. The new model improves the fit to synchrotron emission observations and remains consistent with the original fit to the in situ Pioneer and Voyager data. Further modifications incorporating observations from the Galileo and Cassini spacecraft will be reported in the future.
Document ID
20070023501
Acquisition Source
Jet Propulsion Laboratory
Document Type
Reprint (Version printed in journal)
Authors
Garrett, Henry B.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Levin, Steven M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bolton, Scott J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Evans, Robin W.
(Gibbel Corp. Pasadena, CA, United States)
Bhattacharya, Bidushi
(California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 23, 2013
Publication Date
February 26, 2005
Publication Information
Publication: Geophysical Research Letters
Publisher: American Geophysical Union
Volume: 32
ISSN: 0094-8276
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public
Copyright
Other
Keywords
missions
Jovian charged particle environment
synchroton emission observations
Jupiter

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