Pulsar glitch recovery and the superfluidity coefficients of bulk nuclear matter

作者：van Eysden C A^*; Melatos A

来源：Monthly Notices of the Royal Astronomical Society, 2010, 409(3): 1253-1268.

DOI：10.1111/j.1365-2966.2010.17387.x

• dense matter
• hydrodynamics
• stars: interiors
• stars: neutron
• pulsars: general
• stars: rotation

A two-component hydrodynamic model is constructed of the global superfluid flow induced by two-component Ekman pumping during the recovery stage of a glitch. The model successfully accounts for the quasi-exponential recovery observed in pulsars like Vela and the 'overshoot' observed in pulsars like the Crab. By fitting the model to high-resolution timing data, three important constitutive coefficients in bulk nuclear matter can be extracted: the shear viscosity, the mutual friction parameter and the charged fluid fraction. The fitted coefficients for the Crab and Vela are compared with theoretical predictions for several equations of state, including the colour-flavour locked and two-flavour colour superconductor phases of quark matter.

• 出版日期2010-12-11