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arXiv · 0709.2922

PSR B1257+12: a quark star with planets?

Youling Yue·Renxin Xu
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Abstract

A recent observation has shown that PSR B1257+12 could have quite small X-ray emitting area, only about 2000 m$^2$, which is more than three orders smaller than the canonical polar cap size. We suggest here that PSR B1257+12 could be a low-mass quark star with radius of $R \simeq 0.6$ km and mass of $M \simeq 3\times10^{-4}\msun$. Such a low-mass quark star system may form in an accretion induced collapse process or a collision process of two quark stars.

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Youling Yue, Renxin Xu. 2007-09-18. PSR B1257+12: a quark star with planets?. https://doi.org/10.1063/1.2840398

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