X-ray flares of γ-ray bursts: Quakes of solid quark stars?

• 来源期刊: 中国科学G辑（英文版）
• 年，卷（期）: 2009,（2）
• 页码范围: 315-320
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11433-009-0045-x

摘要

A star-quake model is proposed to understand X-ray flares of both long and short γ-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 103 to 106 s later after its birth if the critical temperature of phase transi-tion is a few Metga-electron-volts, and then s 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.