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arXiv · 0904.4559

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

Raka Dona Ray Mandal·Sushan Konar·Mira Dey·Jishnu Dey
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Abstract

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.

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Raka Dona Ray Mandal, Sushan Konar, Mira Dey, Jishnu Dey. 2009-06-26. The micro-glitch in PSR B1821-24 : A case for a strange pulsar?. https://doi.org/10.1111/j.1365-2966.2009.15314.x

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