On the Role of O+ on Magnetic Reconnection in the Earth's Magnetotail

Details On the Role of O+ on Magnetic Reconnection in the Earth's Magnetotail On the Role of O+ on Magnetic Reconnection in the Earth's Magnetotail

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsm44a..05m&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SM44A-05

Physics

2723 Magnetic Reconnection (7526, 7835), 2744 Magnetotail, 2764 Plasma Sheet

Scientific paper

Recent observations from the CLUSTER mission have shown that during geomagnetically disturbed times, the O+ number density in the plasma sheet close to the reconnection X-line in the Earth's magnetotail can become comparable to, or even higher than, the corresponding H+ number density with the O+ ions carrying most of the particle pressure. The role of these O+ ions in the reconnection process has not being clearly identified in a self consistent way. How does it affect the formation of the ion diffusion region? What is its effect on the reconnection rate? Until now, there have been mainly theory/simulation attempts with no clear answer. In this study, we investigate the role of O+ on the magnetic reconnection process using plasma ion composition data from the CLUSTER mission. In particular, we identify the observational signatures of the coupling of the O+ ions in the reconnection system.

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