The Magnetosphere and Plasmasphere

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The Magnetosphere and Plasmasphere

• CSI 769
• 3rd section, Oct. Nov. 2005
• J. Guillory

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• Lecture 8 (Oct.25)
• Bow shock scattering Magnetosphere structure,
  charged particle orbits
• Advance reading Gombosi Ch.1 6 (and/or Parks
  Ch. 4, 8 10).
• and Sci. Am. Apr. 1991 Collisionless Shock
  Waves
• Lecture 9 (Nov. 1)
• Dawn-dusk electric field gyrokinetic codes
  magnetotail current sheet
• Advance reading Gombosi Ch. 7 14, Parks Sec.
  7.8 11.5)
• Lecture 10 (Nov. 8)
• MHD codes boundary conditions parallel
  E-fields precipitation satellite diagnostics
• Advance reading Gombosi Ch. 4 , Parks Sec. 7.7
• In conjunction with the last topic
• Joel Fedder (NRL) is scheduled for a Space
  Sciences Seminar on his MHD magnetosphere code,
  Wed. 10/26, 300 p.m., 206
• Please attend.

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Incoming particle scattering

• Stochastic Injection of Energetic Particles from
  Bow Shock and from Tailward reconnection region
• Nonadiabatic because gyroradius B scale-length
  locally
• Particle orbit diffusion due to field fluctuations

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Magnetic field geometry
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Charged particle orbits, static B

• Fast gyration about field line
• North-south bounce due to magnetic mirror force
• Slow east-west drift due to inhomogeneous
  magnetic field
• ExB drifts due to electric fields

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Magnetosphere Simulation

• Particle codes, incl. gyro-averaged particle
  followers (e.g. Mary Hudsons at Dartmouth)
• Fluid (MHD) codes
• Fedder-Lyon-Mobarry code (NRL)
• Spicers code(s) Odin etc.
• BATSRUS (U. Michigan)
• Hybrid (particles and MHD) codes
• Rice MSM code

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• Models are available for community use
• CCMC http//ccmc.gsfc.nasa.gov/
• UCLA http//www-ggcm2.igpp.ucla.edu/
• Source codes in public domain
• GEDAS (Japan, T. Ogino) (Japan, T.)
  http//gedas22.stelab.nagoya-u.ac.jp/simulatio
  n/jst2k/hpf02.html
• BATSRUS http//csem.engin.umich.edu/
• NRL http//www.lcp.nrl.navy.mil/hpcc-ess/software
  .html
• FCTMHD3D (C.R. DeVore)
• AMRMHD3D (P. MacNeice)
• Zeus 3D MHD (Michael Norman) http//zeus.ncsa.uiu
  c.edu8080/lca_intro_zeus3d.html
• CFD Codes http//icemcfd.com/cfd/CFD_codes.html

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Satellite sensors
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Living With A Star Research Network
Pole Sitter
Solar Dynamics Observatory
L1 Solar Sentinel
Ionospheric Mappers
L2
Radiation Belt Mappers
Distributed network of spacecraft providing
continuous observations Geospace Dynamics
Nework with constellations of smallsats in key
regions of geospace.
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Radiation Belt Mappers
Understand origin and dynamics of the radiation
belts. Determine time space-dependent
evolution of penetrating radiation during
magnetic storms. First Element multiple
spacecraft in 3 petal equatorial orbits in-situ
measurements. Second Element Add higher
latitude coverage.
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Cluster Vortex
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Cluster Doublestar (DSP)
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Image Satellite ENA sensors