Proper motion of the Crab pulsar revisited

被引：20
|
作者：
Ng, C. -Y. [1 ]
Romani, Roger W. [1 ]
机构：
[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
来源：
ASTROPHYSICAL JOURNAL | 2006年 / 644卷 / 01期
关键词：
astrometry; pulsars : individual (Crab); stars : neutron;
D O I：
10.1086/503315
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
It has been suggested that the Crab pulsar's proper motion is aligned with the symmetry axis of the pulsar wind nebula. We have revisited this question, examining > 6 years of F547MWFPC2 chip 3 images to obtain a best-fit value of mu(*) = 14.9 +/- 0.8 mas yr(-1) at P. A. 278 degrees +/- 3 degrees. At 26 degrees +/- 3 degrees to the nebula axis, this substantially relaxes constraints on the birth kick of this pulsar. Such misalignment allows the momentum to be imparted over similar to 1 s timescales.
引用
收藏
页码：445 / 450
页数：6
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