Magnetospheric Interactions of Saturn's Moon Dione (2005-2015)
International audience The moon Dione orbits Saturn at 6.2 Saturn radii R S deep in the Kronian magnetosphere. In situ studies of the moon-magnetosphere interaction processes near Dione were possible with the Cassini/Huygens mission which flew by close to Dione five times at distances between 99 and...
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Online Access: | https://insu.hal.science/insu-03673146 https://insu.hal.science/insu-03673146/document https://insu.hal.science/insu-03673146/file/JGR%20Space%20Physics%20-%202020%20-%20Krupp%20-%20Magnetospheric%20Interactions%20of%20Saturn%20s%20Moon%20Dione%202005%202015.pdf https://doi.org/10.1029/2019JA027688 |
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ftccsdartic:oai:HAL:insu-03673146v1 2023-10-09T21:54:17+02:00 Magnetospheric Interactions of Saturn's Moon Dione (2005-2015) Krupp, N. Kotova, A. Roussos, E. Simon, S. Liuzzo, L. Paranicas, C. Khurana, K. Jones, G. H. Centre National d'Études Spatiales Toulouse (CNES) 2020 https://insu.hal.science/insu-03673146 https://insu.hal.science/insu-03673146/document https://insu.hal.science/insu-03673146/file/JGR%20Space%20Physics%20-%202020%20-%20Krupp%20-%20Magnetospheric%20Interactions%20of%20Saturn%20s%20Moon%20Dione%202005%202015.pdf https://doi.org/10.1029/2019JA027688 en eng HAL CCSD American Geophysical Union/Wiley info:eu-repo/semantics/altIdentifier/doi/10.1029/2019JA027688 insu-03673146 https://insu.hal.science/insu-03673146 https://insu.hal.science/insu-03673146/document https://insu.hal.science/insu-03673146/file/JGR%20Space%20Physics%20-%202020%20-%20Krupp%20-%20Magnetospheric%20Interactions%20of%20Saturn%20s%20Moon%20Dione%202005%202015.pdf BIBCODE: 2020JGRA.12527688K doi:10.1029/2019JA027688 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9380 EISSN: 2169-9402 Journal of Geophysical Research Space Physics https://insu.hal.science/insu-03673146 Journal of Geophysical Research Space Physics, 2020, 125, ⟨10.1029/2019JA027688⟩ outer planets Dione moon-magnetosphere interaction [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2020 ftccsdartic https://doi.org/10.1029/2019JA027688 2023-09-23T23:42:42Z International audience The moon Dione orbits Saturn at 6.2 Saturn radii R S deep in the Kronian magnetosphere. In situ studies of the moon-magnetosphere interaction processes near Dione were possible with the Cassini/Huygens mission which flew by close to Dione five times at distances between 99 and 516 km. In addition, Cassini crossed Dione's L-shell more than 400 times between 2004 and 2017 and documented the variability of Saturn's magnetosphere. Different flyby geometries allowed to study the interaction processes upstream, in the low-energy wake, and above the north pole of Dione. We describe here the energetic particle measurements from the Low Energy Magnetospheric Measurement System (LEMMS), part of the Magnetosphere Imaging Instrument (MIMI) onboard Cassini. We also use hybrid simulation results from "A.I.K.E.F." to interpret the signatures in the particle fluxes. This paper is a continuation of Krupp et al. (2013, https://doi.org/10.1016/j.icarus.2013.06.007 ) and Kotova et al. (2015, https://doi.org/10.1016/j.icarus.2015.06.031 ). The key results are as follows: (1) Saturn's magnetosphere at Dione's orbit is highly variable with changes in energetic charged particle fluxes by 1-2 orders of magnitude. (2) The dropout signatures near Dione are basically consistent with a fully absorbing obstacle, but some features point to more complex interaction processes than plasma and energetic particle absorption. (3) Absorption signatures are found to be asymmetric with respect to the orientation of the moon, indicative of the presence of radial drift components for electrons. (4) The deepest absorption signatures were observed at the edge of the low-energy wake pointing to gradient-B drifts strongest in that part of the interaction region. Article in Journal/Newspaper North Pole Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) North Pole Kotova ENVELOPE(36.742,36.742,64.690,64.690) Journal of Geophysical Research: Space Physics 125 6 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
outer planets Dione moon-magnetosphere interaction [SDU]Sciences of the Universe [physics] |
spellingShingle |
outer planets Dione moon-magnetosphere interaction [SDU]Sciences of the Universe [physics] Krupp, N. Kotova, A. Roussos, E. Simon, S. Liuzzo, L. Paranicas, C. Khurana, K. Jones, G. H. Magnetospheric Interactions of Saturn's Moon Dione (2005-2015) |
topic_facet |
outer planets Dione moon-magnetosphere interaction [SDU]Sciences of the Universe [physics] |
description |
International audience The moon Dione orbits Saturn at 6.2 Saturn radii R S deep in the Kronian magnetosphere. In situ studies of the moon-magnetosphere interaction processes near Dione were possible with the Cassini/Huygens mission which flew by close to Dione five times at distances between 99 and 516 km. In addition, Cassini crossed Dione's L-shell more than 400 times between 2004 and 2017 and documented the variability of Saturn's magnetosphere. Different flyby geometries allowed to study the interaction processes upstream, in the low-energy wake, and above the north pole of Dione. We describe here the energetic particle measurements from the Low Energy Magnetospheric Measurement System (LEMMS), part of the Magnetosphere Imaging Instrument (MIMI) onboard Cassini. We also use hybrid simulation results from "A.I.K.E.F." to interpret the signatures in the particle fluxes. This paper is a continuation of Krupp et al. (2013, https://doi.org/10.1016/j.icarus.2013.06.007 ) and Kotova et al. (2015, https://doi.org/10.1016/j.icarus.2015.06.031 ). The key results are as follows: (1) Saturn's magnetosphere at Dione's orbit is highly variable with changes in energetic charged particle fluxes by 1-2 orders of magnitude. (2) The dropout signatures near Dione are basically consistent with a fully absorbing obstacle, but some features point to more complex interaction processes than plasma and energetic particle absorption. (3) Absorption signatures are found to be asymmetric with respect to the orientation of the moon, indicative of the presence of radial drift components for electrons. (4) The deepest absorption signatures were observed at the edge of the low-energy wake pointing to gradient-B drifts strongest in that part of the interaction region. |
author2 |
Centre National d'Études Spatiales Toulouse (CNES) |
format |
Article in Journal/Newspaper |
author |
Krupp, N. Kotova, A. Roussos, E. Simon, S. Liuzzo, L. Paranicas, C. Khurana, K. Jones, G. H. |
author_facet |
Krupp, N. Kotova, A. Roussos, E. Simon, S. Liuzzo, L. Paranicas, C. Khurana, K. Jones, G. H. |
author_sort |
Krupp, N. |
title |
Magnetospheric Interactions of Saturn's Moon Dione (2005-2015) |
title_short |
Magnetospheric Interactions of Saturn's Moon Dione (2005-2015) |
title_full |
Magnetospheric Interactions of Saturn's Moon Dione (2005-2015) |
title_fullStr |
Magnetospheric Interactions of Saturn's Moon Dione (2005-2015) |
title_full_unstemmed |
Magnetospheric Interactions of Saturn's Moon Dione (2005-2015) |
title_sort |
magnetospheric interactions of saturn's moon dione (2005-2015) |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://insu.hal.science/insu-03673146 https://insu.hal.science/insu-03673146/document https://insu.hal.science/insu-03673146/file/JGR%20Space%20Physics%20-%202020%20-%20Krupp%20-%20Magnetospheric%20Interactions%20of%20Saturn%20s%20Moon%20Dione%202005%202015.pdf https://doi.org/10.1029/2019JA027688 |
long_lat |
ENVELOPE(36.742,36.742,64.690,64.690) |
geographic |
North Pole Kotova |
geographic_facet |
North Pole Kotova |
genre |
North Pole |
genre_facet |
North Pole |
op_source |
ISSN: 2169-9380 EISSN: 2169-9402 Journal of Geophysical Research Space Physics https://insu.hal.science/insu-03673146 Journal of Geophysical Research Space Physics, 2020, 125, ⟨10.1029/2019JA027688⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2019JA027688 insu-03673146 https://insu.hal.science/insu-03673146 https://insu.hal.science/insu-03673146/document https://insu.hal.science/insu-03673146/file/JGR%20Space%20Physics%20-%202020%20-%20Krupp%20-%20Magnetospheric%20Interactions%20of%20Saturn%20s%20Moon%20Dione%202005%202015.pdf BIBCODE: 2020JGRA.12527688K doi:10.1029/2019JA027688 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2019JA027688 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
125 |
container_issue |
6 |
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1779317811445760000 |