Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm53a1425s&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SM53A-1425
Other
2744 Magnetotail, 2753 Numerical Modeling, 2764 Plasma Sheet
Scientific paper
Comparisons of data with models of the magnetotail current sheet have mainly used the Harris model, which is not a suitable candidate. The absence of a magnetic field component normal to the sheet, a vanishing asymptotic density, and a uniform tangential drift across the magnetic field are among those assumptions of the Harris model which are violated in the real magnetotail. We have constructed a "four-group" 1D fluid model where the ions approaching the center from opposite sides are separate groups; the electrons are a third group and trapped ions the fourth. The use of two groups for the center-crossing ions allows a straightforward treatment of the asymmetric case of different boundary conditions on opposite sides of the sheet. Trapped ions are necessary for a stable solution as has been shown by previous authors. We are testing use of the Chew-Goldberger-Low pressure relations for ions to obtain closure, whereas we assume electrons are massless and isothermal. We work in the deHoffman-Teller reference frame but the solution can be transformed into the earth's frame which then contains an electric field. This field leads to gain in particle energy in the new frame. We give some examples of model solutions for the 1-D magnetotail and discuss what kinds of measurements are necessary to provide boundary conditions for using this model. We believe that this treatment offers a better model for comparison with data, leading to quantitative tests of both the model and the interpretation of data, and providing a better understanding of magnetotail processes.
McCarthy Mark P.
Steinhauer L. C.
Whipple Elden C.
No associations
LandOfFree
Multi-Fluid Model of 1D Magnetotail Current Sheet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multi-Fluid Model of 1D Magnetotail Current Sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-Fluid Model of 1D Magnetotail Current Sheet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1238266