长γ暴时域功率密度谱与光度的强相关

提供一个基于光变曲线的长γ暴光度的估计量．对BASTE记录到的12个已知红移的γ暴，利用时域上的时变分析方法计算了各暴的功率密度谱，用功率密度的峰值P表征光变曲线变化的剧烈程度．通过拟合发现在共动坐标系P与γ暴的各向同性峰值光度L之间存在着相关关系．这是继Norris等和Reichart等发现时间延迟与光度、变化率与光度的相关性之后又一个γ暴时变特征量与其光度之间的相关关系．

Strong Correlation between the Peak Power Density in Time Domain and the Luminosity of Long γ Ray Bursts

This work presents a possible luminosity estimator for the long gamma-ray bursts based on the light curves. We use the methods of temporal variability analysis in time domain to calculate the power density spectrum (PDS) of the 12 7-ray bursts (GRBs) with known redshifts observed by CGRO/BATSE. The peak of the power density P measures the variability intensity of each light curve and a strong correlation is found between P and the isotropic peak luminosity L. It's a new relationship between the temporal quantities and the luminosities of long GRBs, succeeding the lag-luminosity relation suggested by Norris et al.(2000) and variability-luminosity relation shown by Reichart et al. (2001).