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Juno Plasma Wave Observations at Ganymede.

W S Kurth1, A H Sulaiman1, G B Hospodarsky1

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Summary
This summary is machine-generated.

Juno

Keywords:
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Area of Science:

  • Planetary Science
  • Plasma Physics
  • Magnetospheric Physics

Background:

  • Ganymede, Jupiter's largest moon, possesses its own intrinsic magnetosphere.
  • Understanding Ganymede's magnetosphere is crucial for comprehending Jovian system dynamics.

Purpose of the Study:

  • To analyze plasma wave phenomena within Ganymede's magnetosphere during a Juno flyby.
  • To identify distinct regions and their associated wave characteristics.

Main Methods:

  • In-situ measurements of plasma waves using the Juno Waves instrument.
  • Analysis of electron densities and variability to delineate magnetospheric regions.

Main Results:

  • Three distinct regions identified: wake, nightside, and dayside, differentiated by electron density.
  • Observed plasma waves include electron cyclotron harmonic emissions, whistler-mode chorus, and hiss.
  • Low-frequency turbulence and electrostatic solitary waves characterize the wake region.

Conclusions:

  • Plasma waves in Ganymede's magnetosphere likely interact with energetic electrons, causing pitch angle scattering and acceleration.
  • Radio emissions detected suggest Ganymede's magnetosphere as their source.