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Source region and growth analysis of narrowband Z-mode emission at Saturn

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Source region and growth analysis of narrowband Z-mode emission at Saturn. / Menietti, J. D.; Yoon, P. H.; Pisa, D.; Ye, S.-Y.; Santolik, O.; Arridge, Christopher Stephen; Gurnett, D.A.; Coates, A. J.

In: Journal of Geophysical Research: Space Physics, Vol. 121, No. 12, 12.2016, p. 11929-11942.

Research output: Contribution to journalJournal article

Harvard

Menietti, JD, Yoon, PH, Pisa, D, Ye, S-Y, Santolik, O, Arridge, CS, Gurnett, DA & Coates, AJ 2016, 'Source region and growth analysis of narrowband Z-mode emission at Saturn', Journal of Geophysical Research: Space Physics, vol. 121, no. 12, pp. 11929-11942. https://doi.org/10.1002/2016JA022913

APA

Menietti, J. D., Yoon, P. H., Pisa, D., Ye, S-Y., Santolik, O., Arridge, C. S., Gurnett, D. A., & Coates, A. J. (2016). Source region and growth analysis of narrowband Z-mode emission at Saturn. Journal of Geophysical Research: Space Physics, 121(12), 11929-11942. https://doi.org/10.1002/2016JA022913

Vancouver

Menietti JD, Yoon PH, Pisa D, Ye S-Y, Santolik O, Arridge CS et al. Source region and growth analysis of narrowband Z-mode emission at Saturn. Journal of Geophysical Research: Space Physics. 2016 Dec;121(12):11929-11942. https://doi.org/10.1002/2016JA022913

Author

Menietti, J. D. ; Yoon, P. H. ; Pisa, D. ; Ye, S.-Y. ; Santolik, O. ; Arridge, Christopher Stephen ; Gurnett, D.A. ; Coates, A. J. / Source region and growth analysis of narrowband Z-mode emission at Saturn. In: Journal of Geophysical Research: Space Physics. 2016 ; Vol. 121, No. 12. pp. 11929-11942.

Bibtex

@article{42d5159ba38e4d25b3041e95477d7ce9,
title = "Source region and growth analysis of narrowband Z-mode emission at Saturn",
abstract = "Intense Z-mode emission is observed in the lower density region near the inner edge of the Enceladus torus at Saturn, where these waves may resonate with MeV electrons. The source mechanism of this emission, which is narrow-banded and most intense near 5 kHz, is not well understood. We survey the Cassini Radio and Plasma Wave Science data to isolate several probable source regions near the inner edge of the Enceladus density torus. Electron phase space distributions are obtained from the Cassini Electron Spectrometer, part of the Cassini Plasma Spectrometer investigation. We perform a plasma wave growth analysis to conclude that an electron temperature anisotropy and possibly a weak loss cone can drive the Z mode as observed. Electrostatic electron acoustic waves and perhaps weak beam modes are also found to be unstable coincident with the Z mode. Quasi-steady conditions near the Enceladus density torus may result in the observations of narrowband Z-mode emission at Saturn.",
keywords = "wave-particle interactions, planetary magnetospheres",
author = "Menietti, {J. D.} and Yoon, {P. H.} and D. Pisa and S.-Y. Ye and O. Santolik and Arridge, {Christopher Stephen} and D.A. Gurnett and Coates, {A. J.}",
note = "{\textcopyright}2016. American Geophysical Union. All Rights Reserved.",
year = "2016",
month = dec
doi = "10.1002/2016JA022913",
language = "English",
volume = "121",
pages = "11929--11942",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9402",
publisher = "Blackwell Publishing Ltd",
number = "12",

}

RIS

TY - JOUR

T1 - Source region and growth analysis of narrowband Z-mode emission at Saturn

AU - Menietti, J. D.

AU - Yoon, P. H.

AU - Pisa, D.

AU - Ye, S.-Y.

AU - Santolik, O.

AU - Arridge, Christopher Stephen

AU - Gurnett, D.A.

AU - Coates, A. J.

N1 - ©2016. American Geophysical Union. All Rights Reserved.

PY - 2016/12

Y1 - 2016/12

N2 - Intense Z-mode emission is observed in the lower density region near the inner edge of the Enceladus torus at Saturn, where these waves may resonate with MeV electrons. The source mechanism of this emission, which is narrow-banded and most intense near 5 kHz, is not well understood. We survey the Cassini Radio and Plasma Wave Science data to isolate several probable source regions near the inner edge of the Enceladus density torus. Electron phase space distributions are obtained from the Cassini Electron Spectrometer, part of the Cassini Plasma Spectrometer investigation. We perform a plasma wave growth analysis to conclude that an electron temperature anisotropy and possibly a weak loss cone can drive the Z mode as observed. Electrostatic electron acoustic waves and perhaps weak beam modes are also found to be unstable coincident with the Z mode. Quasi-steady conditions near the Enceladus density torus may result in the observations of narrowband Z-mode emission at Saturn.

AB - Intense Z-mode emission is observed in the lower density region near the inner edge of the Enceladus torus at Saturn, where these waves may resonate with MeV electrons. The source mechanism of this emission, which is narrow-banded and most intense near 5 kHz, is not well understood. We survey the Cassini Radio and Plasma Wave Science data to isolate several probable source regions near the inner edge of the Enceladus density torus. Electron phase space distributions are obtained from the Cassini Electron Spectrometer, part of the Cassini Plasma Spectrometer investigation. We perform a plasma wave growth analysis to conclude that an electron temperature anisotropy and possibly a weak loss cone can drive the Z mode as observed. Electrostatic electron acoustic waves and perhaps weak beam modes are also found to be unstable coincident with the Z mode. Quasi-steady conditions near the Enceladus density torus may result in the observations of narrowband Z-mode emission at Saturn.

KW - wave-particle interactions

KW - planetary magnetospheres

U2 - 10.1002/2016JA022913

DO - 10.1002/2016JA022913

M3 - Journal article

VL - 121

SP - 11929

EP - 11942

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9402

IS - 12

ER -