Saturn Chorus Intensity Variations Due to Local Electron Phase Space Density

Whistler mode chorus plasma wave emissions have been observed at Saturn, particularly near the magnetic equator which is thought to be the source region. However, during crossings of the magnetic equator along nearly constant L shells, the Cassini Radio and Plasma Wave Investigation (RPWS) often observes a local decrease in chorus intensity and bandwidth closest to the magnetic equator. In addition, chorus emissions with enhanced intensities and bandwidths are often observed within plasma injection regions. We investigate linear chorus growth rate using the WHAMP dispersion solver and locally observed electron phase space density measurements from the Electron Spectrometer (ELS) of the Cassini Plasma Spectrometer Investigation (CAPS) to determine the parameters responsible for the variations in chorus intensity and bandwidth.