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Plasma Wave and Particle Dynamics During Interchange Events in the Jovian Magnetosphere Using Juno Observations

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2023GL103894· OSTI ID:2228997
 [1];  [1];  [2];  [1];  [3];  [4];  [4];  [4];  [5];  [5];  [6];  [7];  [8]
  1. Center for Space Physics Boston University Boston MA USA
  2. Center for Space Physics Boston University Boston MA USA, Department of Atmospheric and Oceanic Sciences University of California, Los Angeles Los Angeles CA USA
  3. Institute for Physical Science and Technology University of Maryland College Park MD USA
  4. Department of Physics and Astronomy University of Iowa Iowa City IA USA
  5. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA
  6. Southwest Research Institute San Antonio TX USA, University of Texas at San Antonio San Antonio TX USA
  7. Goddard Space Flight Center Greenbelt MD USA
  8. Southwest Research Institute San Antonio TX USA
+ Show Author Affiliations
Abstract

Interchange instability is known to drive fast radial transport of particles in Jupiter's inner magnetosphere. Magnetic flux tubes associated with the interchange instability often coincide with changes in particle distributions and plasma waves, but further investigations are required to understand their detailed characteristics. We analyze representative interchange events observed by Juno, which exhibit intriguing features of particle distributions and plasma waves, including Z‐mode and whistler‐mode waves. These events occurred at an equatorial radial distance of ∼9 Jovian radii on the nightside, with Z‐mode waves observed at mid‐latitude and whistler‐mode waves near the equator. We calculate the linear growth rate of whistler‐mode and Z‐mode waves based on the observed plasma parameters and electron distributions and find that both waves can be locally generated within the interchanged flux tube. Our findings are important for understanding particle transport and generation of plasma waves in the magnetospheres of Jupiter and other planetary systems.

Research Organization:
Univ. of Maryland, College Park, MD (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
SC0022963
OSTI ID:
2228997
Alternate ID(s):
OSTI ID: 2228998
OSTI ID: 2577934
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 23 Vol. 50; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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