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the interplanetary magnetic field observed by juno enroute to jupiterThe Juno spacecraft was launched on 5 August 2011 and spent nearly 5 years traveling through the inner heliosphere on its way to Jupiter. The Magnetic Field Investigation was powered on shortly after launch and obtained vector measurements of the interplanetary magnetic field (IMF) at sample rates from 1 to 64 samples/second. The evolution of the magnetic field with radial distance from the Sun is compared to similar observations obtained by Voyager 1 and 2 and the Ulysses spacecraft, allowing a comparison of the radial evolution between prior solar cycles and the current depressed one. During the current solar cycle, the strength of the IMF has decreased throughout the inner heliosphere. A comparison of the variance of the normal component of the magnetic field shows that near Earth the variability of the IMF is similar during all three solar cycles but may be less at greater radial distances.
Document ID
20180000655
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gruesbeck, Jacob R.
(Maryland Univ. College Park, MD, United States)
Gershman, Daniel J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Espley, Jared R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Connerney, John E. P.
(Adnet Systems, Inc. Greenbelt, MD, United States)
Date Acquired
January 18, 2018
Publication Date
June 27, 2017
Publication Information
Publication: Geophysical Research Letters
Volume: 44
Issue: 12
ISSN: 0094-8276
Subject Category
Lunar and Planetary Science and Exploration
Report/Patent Number
GSFC-E-DAA-TN51161
Funding Number(s)
CONTRACT_GRANT: NNG17PT01A
CONTRACT_GRANT: 80GSFC17C0003
Distribution Limits
Public
Copyright
Other
Keywords
Magnetic Fiel
Heliosphere
Interplanetary