论文标题

分析数据处理方法对短GRB中磁性螺旋桨模型的影响

An analysis of the effect of data processing methods on magnetic propeller models in short GRBs

论文作者

Meredith, Tomos R. L., Wynn, Graham A., Evans, Philip A.

论文摘要

我们对Swift Burst Analyzer的观察数据进行了分析,该样本的15个短伽马射线爆发样品具有延长的发射(SGRBEE),这些样本已被处理,以使Swift的计数速率转换因子的误差传播被应用于磁通测量值。我们将这种传播应用于爆发分析仪在0.3-10 KEV和15-50 keV的数据上,并确定不同带中光曲线形态的明显差异。在使用0.3-10 KEV,15-50 KEV以及两个频段的组合进行的数据进行分析时,我们强调了从其天然带通中推出数据对光曲线的影响。然后,我们通过拟合Sgrbees的磁力动力模型来测试这些数据,并表明该模型与两个频段中的数据一致,但在包括此误差传播时,通常会非常宽松地约束该模型的物理参数,并且在两个频段中不一致。通过这种方式,我们强调了Swift数据处理方法对物理模型的详细信息的重要性。

We present analysis of observational data from the Swift Burst Analyser for a sample of 15 short gamma-ray bursts with extended emission (SGRBEEs) which have been processed such that error propagation from Swift's count-rate-to-flux conversion factor is applied to the flux measurements. We apply this propagation to data presented by the Burst Analyser at 0.3-10 keV and also at 15-50 keV, and identify clear differences in the morphologies of the light-curves in the different bands. In performing this analysis with data presented at both 0.3-10 keV, at 15-50 keV, and also at a combination of both bands, we highlight the impact of extrapolating data from their native bandpasses on the light-curve. We then test these data by fitting to them a magnetar-powered model for SGRBEEs, and show that while the model is consistent with the data in both bands, the model's derived physical parameters are generally very loosely constrained when this error propagation is included and are inconsistent across the two bands. In this way, we highlight the importance of the Swift data processing methodology to the details of physical model fits to SGRBEEs.

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