Quasinormal modes of warped AdS3 black holes and warped AdS/CFT correspondence

We calculate the scalar quasinormal modes of warped AdS3 black holes analytically. We find that in general they are not in agreement with the prediction of the usual AdS/CFT correspondence. Nevertheless, for the black hole not deviating far from BTZ black hole, the quasinormal frequencies are still well consistent with AdS/CFT correspondence.