Analog black holes in flowing dielectrics
  We show that a flowing dielectric medium with a linear response to an external electric field can be used to generate an analog geometry that has many of the formal properties of a Schwarzschild black hole for light rays, in spite of birefringence. We also discuss the possibility of generating these analog black holes in the laboratory. 
M. Novello, S. Perez Bergliaffa, J. Salim, V. De Lorenci and R.   Klippert