The Relationship between the Power-Law Indices of the Temporal Properties on Energy and the Spectral Lag and Photon Flux of Gamma-Ray Burst Pulses

The Relationship between the Power-Law Indices of the Temporal Properties on Energy and the Spectral Lag and Photon Flux of Gamma-Ray Burst Pulses
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伽马射线暴脉冲能量时间特性的幂律指数与光谱滞后和光子通量的关系

DOI:
10.1093/pasj/65.3.71
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发表时间:
2013-06
影响因子:
2.3
通讯作者:
Ma, Li
Ma, Li
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Zhao, Xiao-Hong;Yin, Yue;Bao, Yu-Ying;Ma, Li

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以往的研究表明,脉冲的时间特性(脉冲宽度,脉冲上升宽度,脉冲衰减宽度和脉冲峰值时间)的能量的依赖关系是一个幂律函数。在这项工作中,我们证明了脉冲宽度,脉冲上升宽度,脉冲衰减宽度和脉冲峰值时间能量的幂律指数与光谱滞后和相对光谱滞后Δ T-31/w(3)相关。(其中Δ t(31)和w(3)分别是BATSE通道1和3之间的频谱滞后以及BATSE通道3的脉冲宽度),使用包括102个良好分离的长持续时间伽马射线爆发脉冲的样本。此外,幂律指数与相对谱滞后的相关性要比与谱滞后的相关性紧密得多。我们进一步发现,幂律指数也与脉冲光子通量相关。这些相关性的可能起源进行了讨论。我们认为,运动学效应可以解释的相关性质。
Previous studies have shown that the dependence of the pulse temporal properties (pulse width, pulse rise width, pulse decay width, and pulse peak time) on energy is a power-law function. In this work we demonstrate that the power-law indices of the pulse width, pulse rise width, pulse decay width, and pulse peak time on energy are correlated with the spectral lag and the relative spectral lag, Delta T-31/w(3) (where Delta t(31) and w(3) are the spectral lag between BATSE channels 1 and 3 and the pulse width of BATSE channel 3, respectively), using a sample including 102 well-separated long-duration gamma-ray burst pulses. In addition, the correlations of the power-law indices with the relative spectral lags are much more tighter than those with the spectral lags. We further find that the power-law indices are also correlated with the pulse photon flux. The possible origins of these correlations are also discussed. We argue that the kinematic effect can explain the correlated properties.
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