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Edberg, N.J.T.; Vigren, E.; Snowden, D.; Regoli, L.H.; Shebanits, O.; Wahlund, J.-E.; Andrews, D.J.; Bertucci, C.; Cui, J. "Titan's Variable Ionosphere During the T118 and T119 Cassini Flybys" (2018) Geophysical Research Letters. 45(17):8721-8728
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Abstract:

We report on unusual dynamics in Titan's ionosphere as a significant difference in ionospheric electron density is observed between the T118 and T119 Cassini nightside flybys. Two distinct nightside electron density peaks were present during T118, at 1,150 and 1,200 km, and the lowest density ever observed in Titan's ionosphere at altitudes 1,000–1,350 km was during T118. These flybys were quite similar in geometry, Saturn local time, neutral density, extreme ultraviolet flux, and ambient magnetic field conditions. Despite this, the Radio and Plasma Waves/Langmuir Probe measured a density difference up to a factor of 6 between the passes. The overall difference was present and similar during both inbound and outbound legs. By ruling out other factors, we suggest that an exceptionally low rate of particle impact ionization in combination with dynamics in the ionosphere is the explanation for the observations. ©2018. American Geophysical Union. All Rights Reserved.

Registro:

Documento: Artículo
Título:Titan's Variable Ionosphere During the T118 and T119 Cassini Flybys
Autor:Edberg, N.J.T.; Vigren, E.; Snowden, D.; Regoli, L.H.; Shebanits, O.; Wahlund, J.-E.; Andrews, D.J.; Bertucci, C.; Cui, J.
Filiación:Swedish Institute of Space Physics, Uppsala, Sweden
Department of Physics, Central Washington University, Ellensburg, WA, United States
Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, United States
Department of Physics, Imperial College London, London, United Kingdom
IAFE, Ciudad Universitaria, Buenos Aires, Argentina
School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, China
Key Laboratory of Lunar and Deep Space Exploration, Chinese Academy of Sciences, Beijing, China
Palabras clave:Cassini; ionosphere; RPWS/LP; Titan; Carrier concentration; Electron density measurement; Impact ionization; Ionospheric measurement; Cassini; Density difference; Extreme Ultraviolet; Ionospheric electron densities; Neutral densities; Radio and plasma waves; RPWS/LP; Titan; Ionosphere; electron; electron density; ionization; ionosphere; magnetic field; probe; Saturn; Titan
Año:2018
Volumen:45
Número:17
Página de inicio:8721
Página de fin:8728
DOI: http://dx.doi.org/10.1029/2018GL078436
Título revista:Geophysical Research Letters
Título revista abreviado:Geophys. Res. Lett.
ISSN:00948276
CODEN:GPRLA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v45_n17_p8721_Edberg

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Citas:

---------- APA ----------
Edberg, N.J.T., Vigren, E., Snowden, D., Regoli, L.H., Shebanits, O., Wahlund, J.-E., Andrews, D.J.,..., Cui, J. (2018) . Titan's Variable Ionosphere During the T118 and T119 Cassini Flybys. Geophysical Research Letters, 45(17), 8721-8728.
http://dx.doi.org/10.1029/2018GL078436
---------- CHICAGO ----------
Edberg, N.J.T., Vigren, E., Snowden, D., Regoli, L.H., Shebanits, O., Wahlund, J.-E., et al. "Titan's Variable Ionosphere During the T118 and T119 Cassini Flybys" . Geophysical Research Letters 45, no. 17 (2018) : 8721-8728.
http://dx.doi.org/10.1029/2018GL078436
---------- MLA ----------
Edberg, N.J.T., Vigren, E., Snowden, D., Regoli, L.H., Shebanits, O., Wahlund, J.-E., et al. "Titan's Variable Ionosphere During the T118 and T119 Cassini Flybys" . Geophysical Research Letters, vol. 45, no. 17, 2018, pp. 8721-8728.
http://dx.doi.org/10.1029/2018GL078436
---------- VANCOUVER ----------
Edberg, N.J.T., Vigren, E., Snowden, D., Regoli, L.H., Shebanits, O., Wahlund, J.-E., et al. Titan's Variable Ionosphere During the T118 and T119 Cassini Flybys. Geophys. Res. Lett. 2018;45(17):8721-8728.
http://dx.doi.org/10.1029/2018GL078436