Effects of Minority Species on Magnetic Reconnection

Details Effects of Minority Species on Magnetic Reconnection Effects of Minority Species on Magnetic Reconnection

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm21a1561k&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM21A-1561

Physics

Plasma Physics

[2723] Magnetospheric Physics / Magnetic Reconnection, [7835] Space Plasma Physics / Magnetic Reconnection

Scientific paper

Most studies of reconnection neglect the presence of minority ion species. In the Earth’s magnetosphere O+ can dominate both the density and the pressure at times (e.g., during storm times) and there is clear observational evidence for presence of O+ in some reconnection events [e.g., Kistler et al., 2005; Wygant et al., 2005]. Given the prevalence of O+ in reconnection events, there has been surprisingly little work on kinetic studies of effects of O+ or other minority species on reconnection. Here we examine the effects of minority species of ions on reconnection using a combination of linear Vlasov theory and large-scale driven full particle simulations. This study reveals many surprising results, counter to previous theoretical expectations. Detailed presentation of the effects of minority species on the onset, rate, and the structure of the reconnection region will be presented. Comparison of the results with Cluster observations is discussed.

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