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On Current Sheets a...
On Current Sheets and Associated Density Spikes in Titan's Ionosphere as Seen From Cassini
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- Kim, Konstantin (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Institutionen för fysik och astronomi
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- Edberg, Niklas J. T. (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Shebanits, Oleg (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Wahlund, Jan-Erik (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Vigren, Erik (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Bertucci, Cesar (författare)
- UBA, CONICET, IAFE, Buenos Aires, Argentina; UBA, FCEyN, Dept Phys, Buenos Aires, Argentina
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(creator_code:org_t)
- American Geophysical Union (AGU), 2023
- 2023
- Engelska.
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Ingår i: Journal of Geophysical Research - Space Physics. - : American Geophysical Union (AGU). - 2169-9380 .- 2169-9402. ; 128:3
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The Cassini spacecraft made in-situ measurements of Titan's plasma environment during 126 close encounters between 2004 and 2017. Here we report on observations from the Radio and Plasma Waves System/Langmuir probe instrument (RPWS/LP) from which we have observed, primarily on the outbound leg, a localized increase of the electron density by up to 150 cm−3 with respect to the background. This feature, appearing as an electron density spike in the data, is found during 28 of the 126 flybys. The data from RPWS/LP, the electron spectrometer from the Cassini Plasma Spectrometer package , and the magnetometer is used to calculate electron densities and magnetic field characteristics. The location of these structures around Titan with respect to the nominal corotation direction and the sun direction is investigated. We find that the electron density spikes are primarily observed on the dayside and ramside of Titan. We also observe magnetic field signatures that could suggest the presence of current sheets in most cases. The density spikes are extended along the trajectory of the spacecraft with the horizontal scale of ∼537 ± 160 km and vertical scale ∼399 ± 163 km. We suggest that the density spikes are formed as a result of the current sheet formation.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Titan
- Cassini
- current sheets
- Langmuir probe
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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