Nonradial superfluid modes in oscillating neutron stars

Details Nonradial superfluid modes in oscillating neutron stars Nonradial superfluid modes in oscillating neutron stars

2011-07-21

arxiv.org/abs/1107.4242v2

MNRAS 418 (2011) L54-L58

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

5+ pages, 4 figures, published version. Eqs. (3) and (5) and a few typos are corrected; results unchanged

Scientific paper

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.

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