Are durations of weak gamma-ray bursts reliable?

被引：2
|
作者：
Schmidt, M [1 ]
机构：
[1] CALTECH, Pasadena, CA 91125 USA
来源：
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-COLLOQUIA ON PHYSICS | 2005年 / 28卷 / 03期
关键词：
D O I：
10.1393/ncc/i2005-10057-9
中图分类号：
学科分类号：
摘要：
Simulations in the GUSBAD Catalog of gamma-ray bursts suggest that the apparent duration of a burst decreases as its amplitude is decreased. We see no evidence for this effect in the BATSE catalog. We show that for a burst at the detection limit, the typical signal-to-noise ratio at the edges of the T-90 duration is around 1.5, suggesting that T-90 must be quite uncertain. The situation for T-50 is less unfavorable. Simulations using the exact procedure to derive the durations listed in the BATSE catalog would be useful in quantifying the effect.
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页码：347 / 350
页数：4
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