supported by the National Basic Research Program of China (Grant No. 2009CB824800);the National Natural Science Foundation of China (Grant Nos. 10473023, 10503012, 10621303, and 10633040);the Special Foundation for the Authors of National Excellent Doctoral Dissertations of China by Chinese Academy of Sciences,and the NASA Grant (Grant No. NNX08AL40G)
GRB 080913,with a spectroscopically determined redshift of z=6.7,was the record holder for being the most remote stellar object before the discovery of the recent gamma-ray burst GRB 090423,whose redshift is about 8.2...
supported by the National Natural Science Foundation of China (Grant Nos.10625313 and 10473023);the National Basic Research Program of China (973 Program,Grant No.2009CB824800)
A long plateau phase and an amazing level of brightness have been observed in the X-ray afterglow of GRB 060729. This peculiar light curve is likely due to longterm energy injection in external shock. Here, we present...
supported by the National Natural Science Foundation of China(grant Nos. 10473023, 10503012, 10621303, 10633040 and 10703002);the National Basic Research Program of China (973 Program 2009CB824800);XFW also thanks the support of the NSF AST0307376, NASA NNX07AJ62G, NNX08AL40G, the China Postdoctoral Science Foundation, and the Postdoctoral Research Award of Jiangsu Province
In the fireball model, it is more physically realistic that ganuna-ray burst (GRB) ejecta have a range of bulk Lorentz factors (assuming M ∝ Г^-8). The low Lorentz factor part of the ejecta will catch up with th...
supported by the National Natural Science Foundation of China(NSFC, No. 10473023);Scientific Research Fund of the Sichuan Provincial Education Department,the K. C. Wong Education Foundation (Hong Kong);the Jiangsu Planned Projects for PostdoctoralResearch Funds.
We investigate redshift distributions of three long burst samples, with the first sample containing 131 long bursts with observed redshifts, the second including 220 long bursts with pseudo-redshifts calculated by the...
Supported by National Natural Science Foundation of China (Grant Nos 10625313 ,10221001 ,10473023) ;the RGC grant of the Hong Kong Government under HKU7014/04P
The discovery of multiband afterglows definitely shows that most γ-ray bursts are of cosmological origin. γ-ray bursts are found to be one of the most violent explosive phenomena in the Universe, in which astonishin...