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

Gerard Fitzpatrick; Valerie Connaughton; Sheila McBreen; Dave Tierney

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

High Energy Astrophysical Phenomena 2011-11-17 v1 Instrumentation and Methods for Astrophysics

Authors: Gerard Fitzpatrick , Valerie Connaughton , Sheila McBreen , Dave Tierney

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.

Keywords

gamma-ray bursts radio astronomy instrumentation solar instrument calibration

Cite

@article{arxiv.1111.3779,
  title  = {Uncovering low-level Fermi/GBM emission using orbital background subtraction},
  author = {Gerard Fitzpatrick and Valerie Connaughton and Sheila McBreen and Dave Tierney},
  journal= {arXiv preprint arXiv:1111.3779},
  year   = {2011}
}

Comments

2011 Fermi Symposium proceedings - eConf C110509

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

Abstract

Keywords

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