GALILEO

**Investigation of the Magnetosphere
of Ganymede with Galileo's Energetic Particle Detector**

*Ph.D. dissertation by Shawn M. Stone, University of Kansas,
1999.*

*Copyright 1999 by Shawn M. Stone. Used with
permission.*

### List of Figures (Part 3, Chapters 7-8)

__Feature G2-18:56:31, the Addition of Corotational Electric Field__- Figure 7.1 A: Rate profile of model M1 energy channel A4 at .85 of full corotation for feature G2-18:56:31. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.2 A: Rate profile of model M1 energy channel E1 at .25 of full corotation for feature G2-18:56:31. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.3 A: Rate profile of model M1 energy channel E1 at .5 of full corotation for feature G2-18:56:31. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.4 A: Rate profile of model M1 energy channel E3 at .5 of full corotation for feature G2-18:56:31. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.5 A: Rate profile of model M1 energy channel E3 at .85 of full corotation for feature G2-18:56:31. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.6 A: Rate profile of model M1 energy channel F2 at .85 of full corotation for feature G2-18:56:31. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.7 A: Rate profile of model M2 energy channel A4 at .85 of full corotation for feature G2-18:56:31. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.8 A: Rate profile of model M2 energy channel E1 at .25 of full corotation for feature G2-18:56:31. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.9 A: Rate profile of model M2 energy channel E1 at .5 of full corotation. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.10 A: Rate profile of model M2 energy channel E3 at .5 of full corotation. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.11 A: Rate profile of model M2 energy channel E3 at .85 of full corotation. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.12 A: Rate profile of model M2 energy channel F2 at .85 of full corotation. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.13 Collimator pitch and phase scatter plot for the sector pointed out in Figure 7.2 for M1 E1 G2-18:56:31 subenergy 37 keV at .5 of full corotation.
- Figure 7.14 Collimator pitch and phase scatter plot for the sector pointed out in Figure 7.2 for M1 E1 G2-18:56:31 subenergy 37 keV at .25 of full corotation.
- Figure 7.15 A: Length of the radius vector from the center of Ganymede to the particle as a function of trace time in seconds for subenergy 37 keV sublook direction 1 for model M1 channel E1. B: The Z component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.16 A: The X component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M1 channel E1. B: The Z component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.17 A: Magnetic field at the location of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M1 channel E1. B: Magnetic moment at the location of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.18 A: Velocity of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M1 channel E1. B: Pitch angle of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.19 ZX projection of the trajectory for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.20 ZY projection of the trajectory for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.21 Model M1 E1 G2-18:56:31 subenergy 37 keV at .25 of full corotation. A: The parallel component of the speed of the E1 particle relative to the magnetic field vector as a function of trace time. B: The perpendicular component of the speed of the E1 particle relative to the magnetic field vector as a function of trace time.
- Figure 7.22 A schematic representation of a magnetic field connected to Jupiter and Ganymede with corotational electric field permeating into the magnetosphere.
- Figure 7.23 50% of full corotation. A: Length of the radius vector from the center of Ganymede to the particle as a function of trace time in seconds for subenergy 37 keV sublook direction 1 for model M1 channel E1. B: The Z component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.24 50% of full corotation. A: The X component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M1 channel E1. B: The Z component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.25 50% of full corotation. A: Magnetic field at the location of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M1 channel E1. B: Magnetic moment at the location of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.26 50% of full corotation. A: Velocity of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M1 channel E1. B: Pitch angle of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M1 channel E1.
- Figure 7.27 ZX projection of the trajectory for subenergy 37 keV sublook direction 1 for model M1 channel E1 at 50% of full corotation.
- Figure 7.28 ZY projection of the trajectory for subenergy 37 keV sublook direction 1 for model M1 channel E1 at 50% of full corotation.
- Figure 7.29 Model M1 E1 G2-18:56:31 subenergy 37 keV at .5 of full corotation. A: The parallel component of the speed of the E1 particle relative to the magnetic field vector as a function of trace time. B: The perpendicular component of the speed of the E1 particle relative to the magnetic field vector as a function of trace time.
- Figure 7.30 Collimator pitch and phase scatter plot for the sector pointed out in Figure 7.9 for M2 E1 G2-18:56:31 subenergy 37 keV at .25 of full corotation.
- Figure 7.31 Collimator pitch and phase scatter plot for the sector pointed out in Figure 7.9 for M2 E1 G2-18:56:31 subenergy 37 keV at .5 of full corotation.
- Figure 7.32 25% of full corotation. A: Length of the radius vector from the center of Ganymede to the particle as a function of trace time in seconds for subenergy 37 keV sublook direction 1 for model M2 channel E1. B: The Z component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.33 25% of full corotation. A: The X component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M2 channel E1. B: The Z component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.34 25% of full corotation. A: Magnetic field at the location of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M2 channel E1. B: Magnetic moment at the location of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.35 25% of full corotation. A: Velocity of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M2 channel E1. B: Pitch angle of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.36 ZX projection of the trajectory for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.37 ZY projection of the trajectory for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.38 50% of full corotation. A: Length of the radius vector from the center of Ganymede to the particle as a function of trace time in seconds for subenergy 37 keV sublook direction 1 for model M2 channel E1. B: The Z component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.39 50% of full corotation. A: The X component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M2 channel E1. B: The Z component of the particle position in GSII coordinates for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.40 50% of full corotation. A: Magnetic field at the location of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M2 channel E1. B: Magnetic moment at the location of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.41 50% of full corotation. A: Velocity of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M2 channel E1. B: Pitch angle of the particle as a function of trace time for subenergy 37 keV sublook direction 1 for model M2 channel E1.
- Figure 7.42 ZX projection of the trajectory for subenergy 37 keV sublook direction 1 for model M2 channel E1 at 50% of full corotation.
- Figure 7.43 ZY projection of the trajectory for subenergy 37 keV sublook direction 1 for model M2 channel E1 at 50% of full corotation.

__Feature G2-19:10:51, the Addition of Parallel Electric Field__- Figure 7.44 A: Rate profile of model M1 energy channel E1 with an anti-parallel electric field of 10 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.45 A: Rate profile of model M1 energy channel E1 with an anti-parallel electric field of 50 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.46 A: Rate profile of model M1 energy channel E3 with an anti-parallel electric field of 10 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.47 A: Rate profile of model M1 energy channel E3 with an anti-parallel electric field of 50 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.48 A: Rate profile of model M1 energy channel F2 with an anti-parallel electric field of 10 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.49 A: Rate profile of model M1 energy channel F2 with an anti-parallel electric field of 50 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.50 A: Rate profile of model M2 energy channel E1 with an anti-parallel electric field of 10 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.51 A: Rate profile of model M2 energy channel E1 with an anti-parallel electric field of 50 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.52 A: Rate profile of model M2 energy channel E3 with an anti-parallel electric field of 10 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.53 A: Rate profile of model M2 energy channel E3 with an anti-parallel electric field of 50 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.54 A: Rate profile of model M2 energy channel F2 with an anti-parallel electric field of 10 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.
- Figure 7.55 A: Rate profile of model M2 energy channel F2 with an anti-parallel electric field of 50 mV. B: The pitch and phase angles are computed from the look direction of the EPD detector and the appropriate magnetic field vector R for real and S for simulated.

- Figure 8.1 Plot of the surface magnetic field of Ganymede during the G2 encounter
- Figure 8.2 Plot of the surface magnetic field of Ganymede during the G7 encounter

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Updated 8/23/19, Cameron Crane

## QUICK FACTS

**Manufacturer:**The Galileo Spacecraft was manufactured by the Jet Propulsion Laboratory, Messerschmitt-BĂ¶lkow-Blohm, General Electric, and the Hughes Aircraft Company.

**Mission Duration:**Galileo was planned to have a mission duration of around 8 years, but was kept in operation for 13 years, 11 months, and 3 days, until it was destroyed in a controlled impact with Jupiter on September 21, 2003.

**Destination:**Galileo's destination was Jupiter and its moons, which it orbitted for 7 years, 9 months, and 13 days.