Search Publications

Influence of Titan's Variable Electromagnetic Environment on the Global Distribution of Energetic Neutral Atoms

Simon, Sven; Tippens, Tyler; Liuzzo, Lucas

We combine the electromagnetic fields from a hybrid plasma model with a particle tracing tool to study the spatial distribution of energetic neutral atoms (ENAs) emitted from Titan's atmosphere when the moon is exposed to different magnetospheric upstream regimes. These ENAs are generated when energetic magnetospheric ions undergo charge exchange …

Observations of the First Harmonic of Saturn Kilometric Radiation During Cassini's Grand Finale

Lamy, Laurent; Fischer, Georg; Kurth, William S. +6 more

Clear first harmonic emissions of Saturn Kilometric Radiation are discovered during the Cassini Grand Finale orbits. Both ordinary (O) and extraordinary (X) mode fundamental emissions accompanied by X mode harmonics are observed. Analysis shows that the frequency ratio between the fundamental and harmonic emissions is 2.01 ± 0.08, and the harmonic…

The Response of Saturn's Dawn Field-Aligned Currents to Magnetospheric and Ring Current Conditions During Cassini's Proximal Orbits: Evidence for a Region 2 Response at Saturn

Dougherty, M. K.; Roussos, E.; Cowley, S. W. H. +3 more

Cassini's 2017 proximal orbits provided the opportunity to examine the auroral field-aligned currents in the northern hemisphere dawn sector in relation to wider magnetospheric conditions. We combine three recent studies to examine the response of the dawn region auroral field-aligned currents and the azimuthal ring currents to compressions and ex…

Detection of Equatorial Plasma Velocity Modulations Associated With Planetary Period Oscillations in Saturn's Magnetosphere

Wilson, R. J.; Cowley, S. W. H.; Provan, G. +1 more

We analyze a database of 8920 measurements of thermal ion vector velocities obtained by the Cassini CAPS/IMS instrument in the near-equatorial (±10° latitude) region of Saturn's magnetosphere in the radial range of 5.5-21.5 Saturn radii (R_S) for the presence of modulations due to planetary period oscillations (PPOs). The data span 2004-…