Temperature-dependent pulsations of superfluid neutron stars
arXiv:astro-ph/0602282 · doi:10.1111/j.1365-2966.2006.10982.x
Abstract
We examine radial oscillations of superfluid neutron stars at finite internal temperatures. For this purpose we generalize the description of relativistic superfluid hydrodynamics to the case of superfluid mixtures. We show that in a neutron star at hydrostatic and beta-equilibrium the red-shifted temperature gradient is smoothed out by neutron superfluidity (but not by proton superfluidity). We calculate radial oscillation modes of neutron stars assuming "frozen" nuclear composition in the pulsating matter. The resulting pulsation frequencies show a strong temperature dependence in the temperature range (0.1-1) T_cn, where T_cn is the critical temperature of neutron superfluidity. Combining our results with thermal evolution, we obtain a significant evolution of the pulsation spectrum, associated with highly efficient Cooper pairing neutrino emission, for 20 years after superfluidity onset.
29 pages, 1 table, 4 figures
References in corpus (2)
Cited by in corpus (19)
- Bulk viscosity of superfluid neutron stars
- Composition temperature-dependent g-modes in superfluid neutron stars
- The relativistic entrainment matrix of a superfluid nucleon-hyperon mixture at zero temperature
- Bulk viscosity of superfluid hyperon stars
- Relativistic dynamics of superfluid-superconducting mixtures in the presence of topological defects and an electromagnetic field with application to neutron stars
- Thermodynamically consistent equation of state for an accreted neutron star crust
- The relativistic entrainment matrix of a superfluid nucleon-hyperon mixture. II. Effect of finite temperatures
- Damping of sound waves in superfluid nucleon-hyperon matter of neutron stars
- A superfluid perspective on neutron star dynamics
- R-modes and neutron star recycling scenario
- Temperature effects in pulsating superfluid neutron stars
- Quasi-normal modes of superfluid neutron stars
- Insights into the physics of neutron star interiors from pulsar glitches
- Leptonic contribution to the bulk viscosity of nuclear matter
- Resonance suppression of the r-mode instability in superfluid neutron stars: Accounting for muons and entrainment
- Role of particle diffusion in shaping the gravitational wave signal from neutron star inspirals
- Thermodynamic stability of superflows in General Relativity and Newtonian gravity
- Dissipative superfluid relativistic magnetohydrodynamics of a multicomponent fluid: the combined effect of particle diffusion and vortices
- Extending Israel and Stewart hydrodynamics to relativistic superfluids via Carter's multifluid approach