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arXiv 0904.4559astro-ph.SR
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PSR B1821-24中的微故障:一个奇怪脉冲星的案例?

The micro-glitch in PSR B1821-24 : A case for a strange pulsar?

Raka Dona Ray Mandal, Sushan Konar, Mira Dey, Jishnu Dey

摘要:

PSR B1821-24是M28中的一颗毫秒脉冲星,在两个方面观察到的单一故障是不寻常的。首先,该毛刺的幅度至少比迄今为止观察到的最小毛刺小一个数量级($Δν/ ν\sim 10^{-11}$)。其次,所有其他的故障脉冲星都有很强的磁场,磁场强度为$B \gsim 10^{11} G$,而且都很年轻,而PSR B 1821 -24是一颗旧的回收脉冲星,磁场强度为$2.25\times10^9 G$。我们在前面已经提出,一些回收的夸克星实际上可能是奇怪的夸克星。在这项工作中,我们认为,这样一个{ \em奇怪}脉冲星的地壳属性是正确的,以引起这种规模的故障,解释了毫秒脉冲星的稀缺较大的故障。

英文摘要:

The single glitch observed in PSR B1821-24, a millisecond pulsar in M28, is unusual on two counts. First, the magnitude of this glitch is at least an order of magnitude smaller ($Δν/ ν\sim 10^{-11}$) than the smallest glitch observed to date. Secondly, all other glitching pulsars have strong magnetic fields with $B \gsim 10^{11} G$ and are young, whereas PSR B1821-24 is an old recycled pulsar with a field strength of $2.25\times10^9 G$. We have suggested earlier that some of the recycled pulsars could actually be strange quark stars. In this work we argue that the crustal properties of such a {\em strange} pulsar are just right to give rise to a glitch of this magnitude, explaining the scarcity of larger glitches in millisecond pulsars.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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