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Title: Are Saturn's Interchange Injections Organized by Rotational Longitude?
Authors: Azari, AR
Jia, X
Liemohn, MW
Hospodarsky, GB
Provan, G
Ye, SY
Cowley, SWH
Paranicas, C
Sergis, N
Rymer, AM
Thomsen, MF
Mitchell, DG
First Published: 13-Feb-2019
Publisher: American Geophysical Union (AGU), Wiley
Citation: Journal of Geophysical Research: Space Physics, 2019, 124(3), pp. 1806-1822
Abstract: Saturn's magnetosphere has been extensively studied over the past 13 years with the now retired Cassini mission. Periodic modulations in a variety of magnetospheric phenomena have been observed at periods close to those associated with the emission intensity of Saturn kilometric radiation (SKR). Resulting from Rayleigh-Taylor like plasma instabilities, interchange is believed to be the main plasma transport process in Saturn's inner to middle magnetosphere. Here we examine the organization of equatorially observed interchange events identified based on high-energy (3–22 keV) H + intensifications by several longitude systems that have been derived from different types of measurements. The main question of interest here is as follows: Do interchange injections undergo periodicities similar to the Saturn kilometric radiation or other magnetospheric phenomena? We find that interchange shows enhanced occurrence rates in the northern longitude systems between 30° and 120°, particularly between 7 and 9 Saturn Radii. However, this modulation is small compared to the organization by local time. Additionally, this organization is weak and inconsistent with previous findings based on data with a limited time span.
DOI Link: 10.1029/2018JA026196
ISSN: 2169-9380
eISSN: 2169-9402
Embargo on file until: 13-Aug-2019
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2019, American Geophysical Union (AGU), Wiley. Deposited with reference to the publisher’s open access archiving policy. (
Description: The events and their comparison to previous works are located on the Deep Blue Data Repository under doi:10.7302/Z2WM1BMN ( or can be received through email contact with A. R. Azari.
The file associated with this record is under embargo until 6 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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