  Using a resonance nonlinear Schrodinger equation as a bridge,we explore a
direct connection of cold plasma physics to two-dimensional black
holes.Namely,we compute and diagonalize a metric attached to the propagation of
magneto-acoustic waves in a cold plasma subject to a transverse magnetic
field,and we construct an explicit change of variables by which this metric is
transformed exactly to a Jackiw-Teitelbiom black hole metric.
