Fundamental Technologies Galileo Spacecraft Pages

Investigation of the Magnetosphere of Ganymede with Galileo's Energetic Particle Detector
Ph.D. dissertation by Shawn M. Stone, University of Kansas, 1999.

Detailed Outline of Dissertation

• Dedication and Acknowledgments
• Chapter 1 Introduction
  • Tables 1.1 and 1.2
  • 1.1 Anatomy of a Magnetosphere (Subsections 1.1.1 and 1.1.2; Figure 1)
  • 1.2 Satellites Embedded Within Magnetospheres (Subsections 1.2.1 and 1.2.2; Figures 1.2 - 1.11; Table 1.3)
  • 1.3 Discovery of Ganymede's Magnetic Field (Figures 1.12 - 1.17)
  • 1.4 The Magnetosphere of Ganymede (Figures 1.18 - 1.23; Table 1.4)
  • 1.5 Charged Particles in the Vicinity of Ganymede (Figures 1.24 - 1.34)
  • 1.6 Thesis Overview
• Chapter 2 Single Particle Theory
  • 2.1 Maxwell's Equations and the Lorentz Force (Figure 2.1)
  • 2.2 The Guiding Center Equation of Motion (Subsections 2.2.1 and 2.2.2; Figures 2.2 - 2.5)
  • 2.3 Adiabatic Invariants (Subsection 2.3.1 and Figures 2.6 and 2.7; Subsection 2.3.2; and Subsection 2.3.3 and Figure 2.8)
  • 2.4 Pitch Angle Diffusion (Figure 2.9; Subsection 2.4.1 and Figure 2.10)
  • 2.5 Electric Fields (Subsection 2.5.1 and Figures 2.11 - 2.13; Subsection 2.5.2)
• Chapter 3 Instrument Characteristics and Coordinate Systems
  • Figure 3.1
  • 3.1 The EPD Instrument (Figures 3.2 - 3.3 and Table 3.1)
  • 3.2 Low-Energy Magnetospheric Measurement System (LEMMS) (Subsection 3.2.1, Figure 3.4, and Table 3.2; Subsection 3.2.2 and Table 3.3)
  • 3.3 Count Rate and Differential Particle Flux (Figures 3.5 - 3.7 and Table 3.4)
  • 3.4 Inertial Reference Frames and Coordinate Systems (Figure 3.8 and Table 3.5; Subsection 3.4.1 and Figure 3.9; Subsection 3.4.2 and Figure 3.10; Subsection 3.4.3 and Figure 3.11)
  • 3.5 Coordinate Transformations and SPICE Kernels (Subsection 3.5.1 and Figure 3.12; Subsection 3.5.2; Subsection 3.5.3 and Figure 3.13)
  • 3.6 State Vectors and EPD Look Directions (Subsection 3.6.1; Figures 3.14 - 3.15; Tables 3.6 and 3.7)
• Chapter 4 Magnetic Field Models
  • Figure 4.1
  • 4.1 Offset Tilted Dipole Models
  • 4.2 Spherical Harmonic Models (Table 4.1)
  • 4.3 Modeling of External Sources: Magnetopause and Tail Fields (Subsection 4.3.1, Figure 4.2, and Table 4.2; Subsection 4.3.2, Figures 4.3 - 4.4, and Table 4.3; Subsection 4.3.3 and Figures 4.5 - 4.7)
  • 4.4 The O6 Multipole Model of the Jovian Internal Field (Table 4.4 and Figure 4.8)
  • 4.5 The Magnetodisk Current Sheet: Vector Potential Model (Figures 4.9 - 4.12)
  • 4.6 The Magnetodisk Current Sheet: Euler Potential Model (Figures 4.13 - 4.14 and Table 4.5)
  • 4.7 Ganymede Field: Construction of Model 1 (Table 4.6)
  • 4.8 Ganymede Field: Construction of Model 2 (Table 4.7; Subsection 4.8.1, Tables 4.8 and 4.9; and Figures 4.15 - 4.26; Subsection 4.8.2, Figures 4.27 - 4.28, and Table 4.10; and Subsection 4.8.3 and Figures 4.29 - 4.34)
  • 4.9 The Divergence of Magnetic Field in Models M1 and M2 (Figures 4.35 - 4.36)
  • 4.10 Using the EPD Instrument to Check for Aberration of the Plasma Direction (Table 4.11)
• Chapter 5 The Simulation: Time Reversed Particle Following
  • 5.1 Setting Up the Encounter (Subsection 5.1.1 and Figure 5.1; Subsection 5.1.2 and Figure 5.2)
  • 5.2 Time Reversed Particle Tracing (Figure 5.3; Subsection 5.2.1 and Figures 5.4 - 5.5; Subsection 5.2.2, Figures 5.6 - 5.7, and Tables 5.1 - 5.2)
  • 5.3 Implementation of Pitch Angle Scattering (Figures 5.8 - 5.9)
  • 5.4 Electric Fields
  • 5.5 Force Pitch and Phase Mode
  • 5.6 Stepping Through the Encounter: Constructing the Simulated Count Rate (Figures 5.10 - 5.11)
• Chapter 6 Time Reversed Particle Results:  G2 Encounter
  • 6.1 Encounter Geometry and Overview of the G2 Encounter (Figures 6.1 - 6.5)
  • 6.2 Inbound Results (Figures 6.6 - 6.9; Subsection 6.2.1, Figures 6.10 - 6.37 and Tables 6.1 - 6.5; Subsection 6.2.2, Figures 6.38 - 6.53, and Tables 6.6 - 6.7)
  • 6.3 Closest Approach Results (Figures 6.54 - 6.55; Subsection 6.3.1, Figures 6.56 - 6.84, and Tables 6.8 - 6.10; Subsection 6.3.2 and Figures 6.85 - 6.103)
  • 6.4 Outbound Results (Figures 6.104 - 6.105; Subsection 6.4.1 and Figures 6.106 - 6.124; Subsection 6.4.2, Figures 6.125 - 6.152, and Tables 6.11 - 6.13)
• Chapter 7 Corotational & Parallel Electric Fields:  G2 Encounter
  • 7.1 Feature G2-18:56:31, the Addition of Corotational Electric Field (Figures 7.1 - 7.43 and Tables 7.1 - 7.6)
  • 7.2 Feature G2-19:10:51, the Addition of Parallel Electric Field (Figures 7.44 - 7.55 and Tables 7.7 - 7.8)
• Chapter 8 Discussion and Conclusions
  • 8.1 The Model M2 Magnetic Field Model and Its Implications for the Plasma Environment Near Ganymede for G2 and G7 (Tables 8.1 - 8.2)
  • 8.2 The Ion Null-Point Interactions During the Inbound Pass at G2
  • 8.3 Correspondence of the Simulated Loss Cones and Anti-Loss Cones to the Observed Data for the G2 and G7 Encounters (Tables 8.3 - 8.8)
  • 8.4 Pitch Angle Scattering Results for G2 and G7 (Tables 8.9 - 8.14)
  • 8.5 Corotational and Parallel Electric Field Implications (Tables 8.15 - 8.16)
  • 8.6 Conclusions and Proposal for Future Study (Figures 8.1 - 8.2)
• References
• Appendix A The SPICE Kernel System
• Appendix B G7 Results (Figures B1 - B45)
• Appendix C Additional G2 Results (Figures C1 - C54, plus many additional, un-numbered, figures)

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Updated 8/27/2007, T. Hunt-Ward
tizby@ftecs.com