Artículo
Edberg, N.J.T.; Andrews, D.J.; Shebanits, O.; Ågren, K.; Wahlund, J.-E.; Opgenoorth, H.J.; Roussos, E.; Garnier, P.; Cravens, T.E.; Badman, S.V.; Modolo, R.; Bertucci, C.; Dougherty, M.K. "Extreme densities in Titan's ionosphere during the T85 magnetosheath encounter" (2013) Geophysical Research Letters. 40(12):2879-2883
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Abstract:
We present Cassini Langmuir probe measurements of the highest electron number densities ever reported from the ionosphere of Titan. The measured density reached 4310 cm-3 during the T85 Titan flyby. This is at least 500 cm-3 higher than ever observed before and at least 50% above the average density for similar solar zenith angles. The peak of the ionospheric density is not reached on this flyby, making the maximum measured density a lower limit. During this flyby, we also report that an impacting coronal mass ejection (CME) leaves Titan in the magnetosheath of Saturn, where it is exposed to shocked solar wind plasma for at least 2 h 45 min. We suggest that the solar wind plasma in the magnetosheath during the CME conditions significantly modifies Titan's ionosphere by an addition of particle impact ionization by precipitating protons. Key Points Titan is located in the magnetosheath of Saturn during the T85 flyby The highest ever ionospheric electron densities at Titan are found during T85 The magnetosheath encounter and the extreme densities are due to a CME impact ©2013. American Geophysical Union. All Rights Reserved.
Registro:
| Documento: | Artículo |
| Título: | Extreme densities in Titan's ionosphere during the T85 magnetosheath encounter |
| Autor: | Edberg, N.J.T.; Andrews, D.J.; Shebanits, O.; Ågren, K.; Wahlund, J.-E.; Opgenoorth, H.J.; Roussos, E.; Garnier, P.; Cravens, T.E.; Badman, S.V.; Modolo, R.; Bertucci, C.; Dougherty, M.K. |
| Filiación: | Swedish Institute of Space Physics, Box 537, Uppsala, SE-75121, Sweden Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany University of Toulouse, UPS-OMP, IRAP, Toulouse, France CNRS, IRAP, Toulouse, France Department of Physics and Astronomy, University of Kansas, Lawrence, KS, United States JAXA Institute of Space and Astronautical Science, Sagamihara Kanagawa, Japan Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom UVSQ/LATMOS-IPSL/CNRS-INSU, Guyancourt, France Institute for Astronomy and Space Physics, Ciudad Universitaria, Buenos Aires, Argentina Blackett Laboratory, Imperial College London, London, United Kingdom |
| Palabras clave: | Cassini; ionization; ionosphere; magnetosheath; Titan; Cassini; Coronal mass ejection; Electron number densities; Ionospheric electron densities; Langmuir probe measurements; Magnetosheaths; Solar zenith angle; Titan; Impact ionization; Ionization; Ionospheric measurement; Solar wind; Ionosphere; electron density; ionization; ionosphere; magnetopause; magnetosphere; planetary atmosphere; probe; Saturn; spacecraft; Titan; zenith angle |
| Año: | 2013 |
| Volumen: | 40 |
| Número: | 12 |
| Página de inicio: | 2879 |
| Página de fin: | 2883 |
| DOI: | http://dx.doi.org/10.1002/grl.50579 |
| 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_v40_n12_p2879_Edberg |
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Citas:
---------- APA ----------
Edberg, N.J.T., Andrews, D.J., Shebanits, O., Ågren, K., Wahlund, J.-E., Opgenoorth, H.J., Roussos, E.,..., Dougherty, M.K. (2013) . Extreme densities in Titan's ionosphere during the T85 magnetosheath encounter. Geophysical Research Letters, 40(12), 2879-2883.http://dx.doi.org/10.1002/grl.50579
---------- CHICAGO ----------
Edberg, N.J.T., Andrews, D.J., Shebanits, O., Ågren, K., Wahlund, J.-E., Opgenoorth, H.J., et al. "Extreme densities in Titan's ionosphere during the T85 magnetosheath encounter" . Geophysical Research Letters 40, no. 12 (2013) : 2879-2883.http://dx.doi.org/10.1002/grl.50579
---------- MLA ----------
Edberg, N.J.T., Andrews, D.J., Shebanits, O., Ågren, K., Wahlund, J.-E., Opgenoorth, H.J., et al. "Extreme densities in Titan's ionosphere during the T85 magnetosheath encounter" . Geophysical Research Letters, vol. 40, no. 12, 2013, pp. 2879-2883.http://dx.doi.org/10.1002/grl.50579
---------- VANCOUVER ----------
Edberg, N.J.T., Andrews, D.J., Shebanits, O., Ågren, K., Wahlund, J.-E., Opgenoorth, H.J., et al. Extreme densities in Titan's ionosphere during the T85 magnetosheath encounter. Geophys. Res. Lett. 2013;40(12):2879-2883.http://dx.doi.org/10.1002/grl.50579
