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Analytic theory of Titan's Schumann resonance: Constraints on ionospheric conductivity and buried water ocean

Sotin, Christophe; Karkoschka, Erich; Berthelier, Jean-Jacques +6 more

This study presents an approximate model for the atypical Schumann resonance in Titan's atmosphere that accounts for the observations of electromagnetic waves and the measurements of atmospheric conductivity performed with the Huygens Atmospheric Structure and Permittivity, Wave and Altimetry (HASI-PWA) instrumentation during the descent of the Hu…

Microstructural penetrometry of asteroid regolith analogues and Titan's surface

Green, S. F.; Ball, A. J.; Paton, M. D.

We investigate essential aspects of penetrometer design required to measure particle properties on asteroids using a combination of laboratory analogue regoliths and spaceflight data returned by the Huygens probe from Titan. Penetrometry in granular material is complicated due to multiple and interdependent mechanical processes that occur during p…