Perturbing Supersymmetric Black Hole
  An investigation of the perturbations of the Reissner-Nordstr\"{o}m black hole in the $N=2$ supergravity is presented. We prove in the extremal limit that the black hole responds to the perturbation of each field in the same manner. We conjecture that we can match the modes of the graviton, gravitino and photon because of supersymmetry transformations. 
Hisashi Onozawa, Takashi Okamura, Takashi Mishima and Hideki Ishihara   (Tokyo Inst. of Tech.)