LONG-TERM EVOLUTION OF CRUSTAL NEUTRON-STAR MAGNETIC-FIELDS

被引：34

作者：

URPIN, VA ^{[1
]}

CHANMUGAM, G ^{[1
]}

SANG, YM ^{[1
]}

机构：

[1] LOUISIANA STATE UNIV,DEPT PHYS & ASTRON,BATON ROUGE,LA 70803

来源：

ASTROPHYSICAL JOURNAL | 1994年 / 433卷 / 02期

关键词：

MHD; PULSARS; GENERAL; STARS; MAGNETIC FIELDS; NEUTRON;

D O I：

10.1086/174687

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have derived an analytic solution to the asymptotic behavior of dipolar magnetic fields that are generated in the crusts of neutron stars. We show that if the conductivity is due to impurity scattering, as expected for late stages of evolution, that the surface field strength at the magnetic pole declines with the power law B(p) approximately (t/t0)-2/3. The results are shown to be qualitatively consistent with detailed numerical calculations. These latter results are consistent with some recent analyses of pulsar statistics and the magnetic fields of several binary pulsars with white dwarf companions whose ages have been determined. The dependence of the surface magnetic field on spin period of the pulsar is derived.

引用

页码：780 / 785

页数：6

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