Analysis of Intense Z-Mode Emission Observed During the Cassini Proximal Orbits

J. D. Menietti; T. F. Averkamp; S. -Y. Ye; A. H. Sulaiman; M. W. Morooka; A. M. Persoon; G. B. Hospodarsky; W. S. Kurth; D. A. Gurnett; J. -E. Wahlund

doi:10.1002/2018GL077354

Back

Analysis of Intense Z-Mode Emission Observed During the Cassini Proximal Orbits

Journal article

Open access

Peer reviewed

Analysis of Intense Z-Mode Emission Observed During the Cassini Proximal Orbits

J. D. Menietti, T. F. Averkamp, S. -Y. Ye, A. H. Sulaiman, M. W. Morooka, A. M. Persoon, G. B. Hospodarsky, W. S. Kurth, D. A. Gurnett and J. -E. Wahlund

Geophysical research letters, Vol.45(14), pp.6766-6772

07/28/2018

DOI: 10.1002/2018GL077354

Files and links (1)

url

https://doi.org/10.1002/2018GL077354View

Published (Version of record) Open Access

Abstract

The role of Z-mode emission in the diffusive scattering and resonant acceleration of electrons is believed to be important at Saturn. A survey of the 5kHz component of this emission at Saturn earlier reported strong intensity in the lower density regions where the ratio of plasma frequency to cyclotron frequency, f(p)/f(c)<1. At Saturn this occurs along the inner edge of the Enceladus torus near the equator and at higher latitudes. Using the Cassini Radio and Plasma Wave Science instrument observations during the Cassini proximal orbits, we have now identified these emissions extending down to and within the ionosphere. Wave polarization measurements and unique frequency cutoffs are used to positively identify the wave mode. Analogous to the role of whistler mode chorus at Earth, Saturn Z-mode emissions may interact with electrons contributing to the filling or depleting of Saturn's inner radiation belts.

Geology

Geosciences, Multidisciplinary

Physical Sciences

Science & Technology

Details

Title: Subtitle: Analysis of Intense Z-Mode Emission Observed During the Cassini Proximal Orbits
Creators: J. D. Menietti - University of Iowa
T. F. Averkamp - University of Iowa
S. -Y. Ye - University of Iowa
A. H. Sulaiman - University of Iowa
M. W. Morooka - Swedish Institute of Space Physics
A. M. Persoon - University of Iowa
G. B. Hospodarsky - University of Iowa
W. S. Kurth - University of Iowa
D. A. Gurnett - University of Iowa
J. -E. Wahlund - Swedish Institute of Space Physics
Resource Type: Journal article
Publication Details: Geophysical research letters, Vol.45(14), pp.6766-6772
Publisher: Amer Geophysical Union
DOI: 10.1002/2018GL077354
ISSN: 0094-8276
eISSN: 1944-8007
Number of pages: 7
Grant note: 11415150 / JPL NNX16AI47G; NNX11AM36G / NASA; National Aeronautics & Space Administration (NASA)
Language: English
Date published: 07/28/2018
Academic Unit: Physics and Astronomy
Record Identifier: 9984455546002771

Metrics

1 Record Views

9 Times Cited - Web of Science

See more details