Wednesday, January 25, 2012

1107.4242 (A. I. Chugunov et al.)

Nonradial superfluid modes in oscillating neutron stars    [PDF]

A. I. Chugunov, M. E. Gusakov
For the first time nonradial oscillations of superfluid nonrotating stars are self-consistently 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 centre 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 can be very sensitive to temperature variations. Fast temporal evolution of the pulsation spectrum in the course of neutron star cooling is also analysed.
View original: http://arxiv.org/abs/1107.4242

No comments:

Post a Comment