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  A physical background model for the Fermi Gamma-ray Burst Monitor

Biltzinger, B., Kunzweiler, F., Greiner, J., Toelge, K., & Burgess, J. M. (2020). A physical background model for the Fermi Gamma-ray Burst Monitor. Astronomy and Astrophysics, 640: A8. doi:10.1051/0004-6361/201937347.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-3434-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-3435-3
Genre: Journal Article

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Biltzinger, B.1, Author              
Kunzweiler, F.1, Author              
Greiner, J.1, Author              
Toelge, K.1, Author              
Burgess, J. Michael1, Author              
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: We present the first physically motivated background model for the Gamma-ray Burst Monitor (GBM) on board the Fermi satellite. Such a physically motivated background model has the potential to significantly improve the scientific output of Fermi/GBM, as it can be used to improve the background estimate for spectral analysis and localization of gamma-ray bursts (GRBs) and other sources. Additionally, this model can also lead to detections of new transient events, since long and weak, or slowly rising, events do not activate one of the existing trigger algorithms. In this paper we show the derivation of such a physically motivated background model, which includes the modeling of the different background sources and the correct handling of the response of GBM. While the goal of the paper is to introduce the model rather than developing a transient search algorithm, we demonstrate the ability of the model to fit the background seen by GBM by showing the following four applications for (1) a canonical GRB, (2) the ultra-long GRB 091024, (3) the V404 Cygni outburst in June 2015, and (4) the ultra-long GRB 130925A.

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Language(s): eng - English
 Dates: 2020-07-30
 Publication Status: Published online
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1051/0004-6361/201937347
Other: LOCALID: 3258552
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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
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Publ. Info: France : EDP Sciences S A
Pages: - Volume / Issue: 640 Sequence Number: A8 Start / End Page: - Identifier: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1