Europlanet Science Congress 2021
Virtual meeting
13 – 24 September 2021
Europlanet Science Congress 2021
Virtual meeting
13 September – 24 September 2021
EPSC Abstracts
Vol. 15, EPSC2021-698, 2021
https://doi.org/10.5194/epsc2021-698
European Planetary Science Congress 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Electric properties of Titan’s dusty ionosphere

Oleg Shebanits1, Jan-Erik Wahlund1, Rebecca Perryman2, Hunter Waite2, and Michele Dougherty3
Oleg Shebanits et al.
  • 1Swedish Institute of Space Physics, Uppsala, Uppsala, Sweden (oleg.shebanits@gmail.com)
  • 2South-West Research Institute, San Antonio, USA
  • 3Imperial College London, London, UK

Recent studies have shown that negatively charged dust dramatically alters the electric properties of plasmas, in particular planetary ionospheres. Utilizing Titan flybys from the entire Cassini mission and full plasma content of the moon’s ionosphere (electrons, positive ions and negative ions/dust grains) we derive the electric conductivities and currents, updating and extending previous results which did not include the charged dust and focused on a limited range of flybys.

Compared to the previous estimates, using the full plasma content increases the Pedersen conductivities by a factor ~2 and Hall conductivities by a factor ~1.2. We identify dusty plasma as the reason for the sharp increase of Pedersen conductivity below 1000 km altitude reported previously. Using the full range of Titan flybys also reveals the conductivities on the dayside to be factor ~7-9 larger than on the nightside, owing to higher dayside plasma densities as well as generally heavier plasma species on the nightside.

How to cite: Shebanits, O., Wahlund, J.-E., Perryman, R., Waite, H., and Dougherty, M.: Electric properties of Titan’s dusty ionosphere, European Planetary Science Congress 2021, online, 13–24 Sep 2021, EPSC2021-698, https://doi.org/10.5194/epsc2021-698, 2021.

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