Pulsar glitch recovery and the superfluidity coefficients of bulk nuclear matter

被引：49

作者：

van Eysden, C. A. ^{[1
]}

Melatos, A. ^{[1
]}

机构：

[1] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2010年 / 409卷 / 03期

关键词：

dense matter; hydrodynamics; stars: interiors; stars: neutron; pulsars: general; stars: rotation; NEUTRON-STAR; CRAB PULSAR; VELA PULSAR; SPIN-UP; POSTGLITCH RELAXATION; MUTUAL FRICTION; DYNAMICS; HYDRODYNAMICS; CORE;

D O I：

10.1111/j.1365-2966.2010.17387.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：1253 / 1268

页数：16

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