Type:

Other

Description:

The Voyager and Pioneer Spacecraft have detected large-scale quasi-periodic plasma fluctuations in the outer heliosphere beyond 20 AU. A plasma vortex sheet model can explain these fluctuations and the observed correlations between various physical variables. The large scale outer heliosphere is modeled by solving the 3-D compressible magnetohydrodynamic equations involving three interacting shear layers. Computations were done on a Cray computer at the NASA Center for Computational Sciences. Six cases are animated: Weak magnetic field and strong magnetic field, each at three values of tau, the vortex street characteristic time. Contours of density are shown as dark transparent tubes. Critical points of the velocity field are represented by Glyphs. Vortex cores are shown in orange and blue.

Subjects:

  • Science > General

Education Levels:

    Keywords:

    Space sciences,Astronomy,NSDL,Chemistry,Undergraduate (Upper Division),Science,Graduate/Professional,Undergraduate (Lower Division),oai:nsdl.org:2200/20061002143309352T,Physics,Higher Education,Heliosphere,Space science,Physical sciences,Life Science,Instability,Earth science,Plasma,Geoscience,Space Science,NSDL_SetSpec_456144

    Language:

    English

    Access Privileges:

    Public - Available to anyone

    License Deed:

    Creative Commons Attribution Non-Commercial Share Alike

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