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X-ray flares of γ-ray bursts: Quakes of solid quark stars?
被引:18
|作者:
Xu RenXin
[1
,2
]
Liang EnWei
[3
]
机构:
[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[3] Guangxi Univ, Dept Phys, Nanning 530004, Peoples R China
来源:
SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
|
2009年
/
52卷
/
02期
基金:
中国国家自然科学基金;
关键词:
gamma-rays;
bursts: X-rays;
neutron stars;
elementary particles;
SWIFT XRT DATA;
COMPREHENSIVE ANALYSIS;
SPECTRAL EVOLUTION;
OPTICAL AFTERGLOW;
LIGHT-CURVES;
SUPERNOVA;
ACCRETION;
ORIGIN;
MODEL;
ENERGY;
D O I:
10.1007/s11433-009-0045-x
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
A star-quake model is proposed 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 Metga-electron-volts, 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.
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页码:315 / 320
页数:6
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