Physics – Plasma Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm41a1455y&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SM41A-1455
Physics
Plasma Physics
2723 Magnetic Reconnection (7526, 7835), 7526 Magnetic Reconnection (2723, 7835), 7835 Magnetic Reconnection (2723, 7526)
Scientific paper
Collisionless magnetic reconnection is believed to be one of the most important mechanisms to energize charged particles. It is also widely invoked as being responsible for the transfer of mass, momentum, and energy across boundary layers in various regions of space plasmas. The problem is that collisionless plasmas do not have dissipations such that magnetic field is supposed to be frozen into the plasma, thereby inhibiting the reconnection. In this regard, anomalous resistivity generated by certain microscopic instability/turbulence is widely quoted as being responsible for providing the necessary dissipation for collisionless magnetic reconnection to proceed. However, the specific theoretical program to compute the anomalous resistivity from fundamental equations of plasma physics has not been forthcoming thus far. In this presentation, a quasilinear theory of anomalous resistivity in the vicinity of an X-line reconnection onset site will be discussed. The influence of current-driven instability is manifested through three quantities; the anomalous resistivity, anomlaous momentum and energy transport coefficients, respectively. These quantities are evaluated self- consistently by solving a set of equation derived from the first principles.
Lui Alberto
Yoon Peter H.
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