X-Ray Flares of Gamma-Ray Bursts: Quakes of Solid Quark Stars?
arXiv:0811.0234 · doi:10.1007/s11433-009-0045-x
Abstract
We propose a star-quake model to understand X-ray flares of both long and short Gamma-ray bursts (GRBs) in a solid quark star regime. Two kinds of central engines for GRBs are available if pulsar-like stars are actually (solid) quark stars, i.e., the SNE-type GRBs and the SGR-type GRBs. It is found that a quark star could be solidified about 10^3 to 10^6 s later after its birth if the critical temperature of phase transition is a few MeV, and then a new source of free energy (i.e., elastic and gravitational ones, rather than rotational or magnetic energy) could be possible to power GRB X-ray flares.
8 pages, latex file. 2 figures. To appear in Science in China Series G
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