Physics – Plasma Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsm43b..01s&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SM43B-01
Physics
Plasma Physics
7500 Solar Physics, Astrophysics, And Astronomy, 7800 Space Plasma Physics, 2700 Magnetospheric Physics
Scientific paper
There are two long-range forces that determine the structure and behavior of matter in the universe: gravitational and magnetic. Traditional astrophysics emphasizes the first and plasma astrophysics the second. Regarding the second, fifty years of investigating the local plasma environment-that accessible to in situ measurements by spacecraft but including the sun-has revealed structures and processes that appear to be universal and, thus, to characterize modes in which plasma physics operates at least on the scale of the local cosmos. These universal aspects of cosmic plasma behavior can be divided into five categories: creation and annihilation of magnetic fields, explosive energy conversion, generation of penetrating radiation, spontaneous generation of structures and transients, and magnetic coupling. This talk will illustrate the five categories with solar system examples, describe their treatment by scaling and dimensional analysis, and as an applied example, show that Earth's magnetosphere manifests two such modes of universal behavior.
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