PT Journal AU Babichev, E Fabbri, A TI Stability analysis of black holes in massive gravity: A unified treatment SO Physical Review D JI Phys. Rev. D PY 2014 BP 081502 EP 5pp VL 89 IS 8 DI 10.1103/PhysRevD.89.081502 LA English AB We consider the analytic solutions of massive (bi) gravity which can be written in a simple form using advanced Eddington-Finkelstein coordinates. We analyze the stability of these solutions against radial perturbations. First we recover the previously obtained result on the instability of the bidiagonal bi-Schwarzschild solutions. In the nonbidiagonal case (which contains, in particular, the Schwarzschild solution with Minkowski fiducial metric), we show that generically there are physical spherically symmetric perturbations, but no unstable modes. ER