PSR B1257+12: a quark star with planets?

Details PSR B1257+12: a quark star with planets? PSR B1257+12: a quark star with planets?

2007-09-18

arxiv.org/abs/0709.2922v1

AIPConf.Proc.968:206-208,2008

Astronomy and Astrophysics

Astrophysics

3 pages, 1figure, poster at the international conference "Astrophysics of Compact Objects" (July 1-7, 2007, Huangshan, China)

Scientific paper

10.1063/1.2840398

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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