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

页码：79 / +

页数：3

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