For the first time nonradial oscillations of superfluid neutron stars are studied at finite stellar temperatures. We apply a realistic equation of state and realistic density dependent model of critical temperature of neutron and proton superfluidity. In particular, we discuss three-layer configurations of a star with no neutron superfluidity at the center and in the outer region of the core but with superfluid intermediate region. We show, that oscillation spectra contain a set of modes whose frequencies are very sensitive to temperature variations. In some cases a temperature drop by 0.001% increases pulsation frequencies by ∼10%. Temporal evolution of the pulsation spectrum in the course of neutron star cooling is also analyzed.

Page created on November 25, 2010.