Spontaneous reconnection in the Earth's magnetotail

Details Spontaneous reconnection in the Earth's magnetotail Spontaneous reconnection in the Earth's magnetotail

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.251..209l&link_type=abstract

In ESA Proceedings of the Joint Varenna-Abastumani International School and Workshop on Plasma Astrophysics p 209-213 (SEE N87-

Astronomy and Astrophysics

Astrophysics

Boundary Layer Plasmas, Geomagnetic Tail, Magnetic Field Reconnection, Shear Flow, Magnetic Storms, Magnetohydrodynamic Flow, Magnetohydrodynamic Stability, Tearing Modes (Plasmas)

Scientific paper

Spontaneous reconnection occurring in the earth's magnetotail is discussed. It is shown that the shear flow in the plasmasheet boundary layer and in the plasma mantle as well as mirror type pressure anisotropy can increase the growth rate and the region of unstable wave numbers of the ion tearing mode instability in the plasmasheet region. The typical growth time for the ion tearing instability in the presence of shear flows is found to be as short as 2 minutes. Hence a rapid reconnection in the near earth plasmasheet would occur leading to the onset of the substorm.

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