利用轨道背景扣除揭示低能级费米/GBM发射
Uncovering low-level Fermi/GBM emission using orbital background subtraction
摘要：
费米号上的第二个仪器是伽马射线暴监测器（GBM），它是一个全天监测器，由14个闪烁探测器组成。在分析诸如伽马射线暴（GRB）和太阳耀斑（SF）等瞬态事件时，背景通常被建模为多项式（0-4阶）。然而，对于长事件，背景可能变化得比用简单的多项式所能解释的更多。在这些情况下，需要更准确地了解GBM的背景速率。在这里，我们提出了一种替代的方法，既确定背景和区分低水平的排放从仪器背景。
英文摘要：
The secondary instrument onboard Fermi, the Gamma-ray Burst Monitor (GBM) is an all sky monitor consisting of 14 scintillation detectors. When analysing transient events such as Gamma-Ray Bursts (GRBs) and Solar Flares (SFs) the background is usually modelled as a polynomial (order 0-4). However, for long events the background may vary more than can be accounted for with a simple polynomial. In these cases a more accurate knowledge of GBM's background rates is required. Here we present an alternative method of both determining the background and distinguishing low-level emission from the instrumental background.
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