  We show that the linear perturbations of any spin field in the near-zone
limit of the Kerr black hole are identical to those of an AdS$_2$ black hole
which enjoys the same basic properties of the Kerr black hole. Thanks to this
identification, we calculate the spectrum of the quasinormal modes and the Love
numbers of Kerr black holes using an AdS$_2$/CFT$_1$ correspondence and a group
theoretical approach.
