Collisionless tearing instability in a sheared force-free magnetic field is considered in the framework of electron magnetohydrodynamics. A rigorous analytical analysis demonstrates that the bulk inertia of electrons is the dominant reconnection mechanism in a sufficiently low- plasma, when the reconnection current sheet width exceeds the electron gyroradius. Otherwise a fluidlike approach fails, and fully kinetic treatment of the problem is required. A recently raised issue of the role of the electron gyroviscous cancellation in collisionless reconnection is also addressed.
Skip Nav Destination
Brief Report| November 20 2009
On the role of a nonscalar electron pressure in the collisionless magnetic reconnection
M. Hosseinpour, G. Vekstein; On the role of a nonscalar electron pressure in the collisionless magnetic reconnection. Phys. Plasmas 1 November 2009; 16 (11): 114505. https://doi.org/10.1063/1.3266419
Download citation file: