  Using fully kinetic simulations, we study the suppression of asymmetric
reconnection in the limit where the diamagnetic drift speed >> Alfven speed and
the magnetic shear angle is moderate. We demonstrate that the slippage between
electrons and the magnetic flux facilitates reconnection, and can even result
in fast reconnection that lacks one of the outflow jets. Through comparing a
case where the diamagnetic drift is supported by the temperature gradient with
a companion case that has a density gradient instead, we identify a robust
suppression mechanism. The drift of the x-line is slowed down locally by the
asymmetric nature of the current sheet and the resulting tearing modes, then
the x-line is run over and swallowed by the faster-moving following flux.

Plasma Physics;Earth and Planetary Astrophysics;Solar and Stellar Astrophysics;Space Physics