We apply the method of Banerjee and Kulkarni [R. Banerjee and S. Kulkarni, Phys. Rev. D 77, 024018 (2008).] to provide a derivation of Hawking radiation from the Garfinkle-Horowitz-Strominger (stringy) black hole which falls in the class of the most general spherically symmetric black holes ($\sqrt{-g}\ne 1$) and also the nonextremal D1-D5 black hole using only covariant gravitational anomalies.

• Received 10 October 2007

DOI:https://doi.org/10.1103/PhysRevD.77.024038