Hawking radiation via Anomaly and Tunneling method from Unruh's and   Canonical acoustic black hole
  Hawking radiation from Unruh's and Canonical acoustic black hole is considered from viewpoint of anomaly cancellation method developed by Robinson and Wilczek. Thus, the physics near the horizon can be described using an infinite collection of massless two-dimensional scalar fields in the background of a dilaton and the gravitational anomaly is canceled by the flux of a 1 + 1 dimensional blackbody at the Hawking temperature of the space-time. Consequently, by this method, we can get the Hawking's temperature for Canonical and Unruh's acoustic black hole. 
Ramon Becar, Pablo Gonzalez, Gustavo Pulgar, and Joel Saavedra