The Hurst exponent of Fermi gamma-ray bursts

被引：10

作者：

MacLachlan, G. A. ^{[1
]}

Shenoy, A. ^{[1
]}

Sonbas, E. ^{[2
,3
]}

Coyne, R. ^{[1
]}

Dhuga, K. S. ^{[1
]}

Eskandarian, A. ^{[1
]}

Maximon, L. C. ^{[1
]}

Parke, W. C. ^{[1
]}

机构：

[1] George Washington Univ, Dept Phys, Washington, DC 20052 USA

[2] Adiyaman Univ, Dept Phys, TR-02040 Adiyaman, Turkey

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

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2013年 / 436卷 / 04期

关键词：

methods: data analysis; methods: statistical; gamma-ray burst: general; WAVELET; LONG; SCALE;

D O I：

10.1093/mnras/stt1701

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a wavelet decomposition technique, we have extracted the Hurst exponent for a sample of 46 long and 22 short gamma-ray bursts (GRBs) detected by the Gamma-ray Burst Monitor aboard the Fermi satellite. This exponent is a scaling parameter that provides a measure of long-range behaviour in a time series. The mean Hurst exponent for the short GRBs is significantly smaller than that for the long GRBs. The separation may serve as an unbiased criterion for distinguishing short and long GRBs.

引用

页码：2907 / 2914

页数：8

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