CMI growth rates for Saturnian kilometric radiation

R. L. Mutel; J. D. Menietti; D. A. Gurnett; W. Kurth; P. Schippers; C. Lynch; L. Lamy; C. Arridge; B. Cecconi

doi:10.1029/2010GL044940

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CMI growth rates for Saturnian kilometric radiation

Journal article

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CMI growth rates for Saturnian kilometric radiation

R. L. Mutel, J. D. Menietti, D. A. Gurnett, W. Kurth, P. Schippers, C. Lynch, L. Lamy, C. Arridge and B. Cecconi

Geophysical research letters, Vol.37(19), pp.19105-n/a

10/2010

DOI: 10.1029/2010GL044940

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Abstract

We calculate growth rates for extraordinary mode Saturnian kilometric radiation generated by the electron cyclotron maser instability using a ring-type (DGH) electron phase distribution model fitted to measured electron energy distributions in Saturn's auroral acceleration region. The observed distributions are unstable in spatially isolated regions of transverse linear size of order 103 km. Each unstable region has a growth rate consistent with amplification of background radiation to the peak observed intensity, approximately 14 electric field e-foldings. The observed propagation direction and frequency decrement below the electron cyclotron frequency are also consistent with the CMI growth model. Citation: Mutel, R. L., J. D. Menietti, D. A. Gurnett, W. Kurth, P. Schippers, C. Lynch, L. Lamy, C. Arridge, and B. Cecconi (2010), CMI growth rates for Saturnian kilometric radiation, Geophys. Res. Lett., 37, L19105, doi:10.1029/2010GL044940.

Geology

Geosciences, Multidisciplinary

Physical Sciences

Science & Technology

Details

Title: Subtitle: CMI growth rates for Saturnian kilometric radiation
Creators: R. L. Mutel - University of Iowa
J. D. Menietti - University of Iowa
D. A. Gurnett - University of Iowa
W. Kurth - University of Iowa
P. Schippers - University of Iowa
C. Lynch - University of Iowa
L. Lamy - Imperial College London
C. Arridge - Imperial College London
B. Cecconi - Observatoire de Paris
Resource Type: Journal article
Publication Details: Geophysical research letters, Vol.37(19), pp.19105-n/a
Publisher: Amer Geophysical Union
DOI: 10.1029/2010GL044940
ISSN: 0094-8276
eISSN: 1944-8007
Number of pages: 5
Grant note: PP/E001173/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) ST/G007462/1 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC)
Language: English
Date published: 10/2010
Academic Unit: Physics and Astronomy
Record Identifier: 9984455272102771

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