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arXiv · 1111.3779

Uncovering low-level Fermi/GBM emission using orbital background subtraction

Gerard Fitzpatrick·Valerie Connaughton·Sheila McBreen·Dave Tierney
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Abstract

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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Gerard Fitzpatrick, Valerie Connaughton, Sheila McBreen, Dave Tierney. 2011-11-16. Uncovering low-level Fermi/GBM emission using orbital background subtraction. https://arxiv.org/abs/1111.3779

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