Postlaunch analysis of Swift's gamma-ray burst detection sensitivity

被引：88

作者：

Band, David L.

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Univ Maryland Baltimore Cty, Dept Phys, Joint Ctr Astrophys, Baltimore, MD 21250 USA

来源：

ASTROPHYSICAL JOURNAL | 2006年 / 644卷 / 01期

关键词：

gamma rays : bursts; instrumentation : detectors;

D O I：

10.1086/503326

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The dependence of Swift's detection sensitivity on a burst's temporal and spectral properties shapes the detected burst population. Using simplified models of the detector hardware and the burst trigger system, I find that Swift is more sensitive to long, soft bursts than CGRO's BATSE, a reference detector because of the large burst database it has accumulated. Swift has increased sensitivity in the parameter space region into which time dilation and spectral redshifting move high-redshift bursts.

引用

页码：378 / 384

页数：7

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