High-redshift gamma-ray burst studies with GLAST

被引：0
|
作者：
Bissaldi, Elisabetta [1 ,2 ]
Longo, Francesco [1 ,2 ]
Calura, Francesco [3 ]
Matteucci, Francesca [3 ,4 ]
Barbiellini, Guido [1 ,2 ]
机构：
[1] Univ Trieste, Dipartimento Fis, I-34100 Trieste, Italy
[2] Ist Nazl Fis Nucl, Sezione Trieste, I-34100 Trieste, Italy
[3] Osserv Astron Trieste, INAF, I-34131 Trieste, Italy
[4] Univ Trieste, Dipartimento Astron, I-34131 Trieste, Italy
来源：
GAMMA-RAY BURSTS: PROSPECTS FOR GLAST | 2007年 / 906卷
关键词：
gamma-ray burst; type Ib/c supemovae; gamma-ray instruments;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We compare predicted Type Ib/c supernova (SN) rates with the observed long-duration gamma-ray burst (GRB) rates both locally and as a function of redshift. To do that we assume different star formation histories in galaxies of different morphological type: ellipticals, spirals and irregulars. In particular, the predicted Type Ib/c SN rate (SNRIb/c) is always higher than the GRB rate, as expected, suggesting that only a small fraction (0.1-1%) of them become GRBs. We predict a ratio between the cosmic GRB rate and the cosmic SNRIb/c in the range 10(-2) - 10(-3), in agreement with previous estimates. Finally, due to the high star formation in spheroids at high redshift, we predict more GRBs at high redshift than previous estimates, a prediction which awaits to be proven by future observations by GLAST. Based on our studies and on the current LAT performance, an estimate of the detection possibility of this high-redshift burst population is finally presented.
引用
收藏
页码：79 / +
页数：3
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