EVIDENCE FOR 2 DISTINCT MORPHOLOGICAL CLASSES OF GAMMA-RAY BURSTS FROM THEIR SHORT-TIME SCALE VARIABILITY

被引：55

作者：

LAMB, DQ ^{[1
]}

GRAZIANI, C ^{[1
]}

SMITH, IA ^{[1
]}

机构：

[1] UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 413卷 / 01期

关键词：

Gamma-rays:; bursts;

D O I：

10.1086/186947

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have analyzed the 241 bursts for which peak counts (C)max exist in the publicly available Burst and Transient Source ExPeriment (BATSE) catalog. Introducing peak counts in 1024 ms as a measure of burst brightness B and the ratio of peak counts in 64 and 1024 ms as a measure of short timescale variability V, we find a statistically significant correlation between the brightness and the short time scale variability of gamma-ray bursts. The bursts which are smoother on short time scales are both faint and bright, while the bursts which are variable on short time scales are faint only, suggesting the existence of two distinct morphological classes of bursts.

引用

页码：L11 / L14

页数：4

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