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首页> 美国政府科技报告 >Systematic Effects on Duration Measurements of Gamma-Ray Bursts
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Systematic Effects on Duration Measurements of Gamma-Ray Bursts

机译：伽马射线爆发持续时间测量的系统效应

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The parameters T(sub 90) and T(sub 50) have recently been introduced as a measurement of the duration of gamma-ray bursts. We present here a description of the method of measuring T(sub 90) and T(sub 50) and its application to gamma-ray bursts observed with the Burst and Transient Source Experiment (BATSE) onboard the Compton Gamma-Ray Observatory (CGRO). We use simulated as well as observed time profiles to address some of the possible systematic effects affecting individual T(sub 90)-T(sub 50) measurements. We show that these systematic effects do not mimic those effects that would result from time dilation if the burst sources are at distances of several Gpc. We discuss the impact of these systematic effects on the T(sub 90)-T(sub 50) distributions for the gamma-ray bursts observed with BATSE. We distinguish between various types of T(sub 90)-T(sub 50) distributions, and discuss the ways in which distributions observed with different experiments can vary, even though the measurements for commonly observed bursts may be the same. We then discuss the distributions observed with BATSE and compare them to those observed with other experiments.

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