Search for GeV GRBs with the INCA experiment

被引：18

作者：

Cabrera, R

Castellina, A

Ghia, PL

Kakimoto, F

Kaneko, T

Morello, C

Navarra, G

Nishi, K

Saavedra, O

Trinchero, G

Urzagasti, D

Vallania, P

Velarde, A

Vernetto, S ^{[1
]}

Yoshii, H

机构：

[1] CNR, Ist Cosmogeofis, I-10133 Turin, Italy

[2] Univ Mayor San Andres, Inst Invest Fis, La Paz, Bolivia

[3] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[4] Univ Turin, Dipartimento Fis Gen, Turin, Italy

[5] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan

[6] Okayama Univ, Dept Phys, Okayama 700, Japan

[7] RIKEN, Inst Phys & Chem Res, Wako, Saitama 35101, Japan

[8] Ehime Univ, Dept Phys, Matsuyama, Ehime 790, Japan

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 138卷 / 03期

关键词：

gamma-ray bursts;

D O I：

10.1051/aas:1999368

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

INCA is an air shower array located at Mount Chacaltaya in Bolivia, at 5200 m a.s.l., searching for Gamma Ray Bursts of energy E > 1 GeV. The results presented here concern a GRB search made in correlation with 70 events recorded by BATSE since December 1996 to August 1998. For every burst, the INCA counting rate has been studied both during the BATSE detection time and in 2 hours around. No significant excess has been found in any of the trials. Assuming for the burst a power low energy spectrum extending up to 1 TeV with a slope alpha = -2 and a time duration of 10 s, the obtained 1 GeV divided by 1 TeV energy fluence upper limits range fi om 5.3 10(-5) erg cm(-2) to 2.9 10(-2) erg cm(-2) depending on the event zenith angle.

引用

页码：599 / 600

页数：2