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Localization of Gamma-Ray Bursts Using the Fermi Gamma-Ray Burst Monitor
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2015 (English)In: Astrophysical Journal Supplement Series, ISSN 0067-0049, E-ISSN 1538-4365, Vol. 216, no 2, 32Article in journal (Refereed) Published
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Abstract [en]

The Fermi Gamma-ray Burst Monitor (GBM) has detected over 1400 gamma-ray bursts (GRBs) since it began science operations in 2008 July. We use a subset of over 300 GRBs localized by instruments such as Swift, the Fermi Large Area Telescope, INTEGRAL, and MAXI, or through triangulations from the InterPlanetary Network, to analyze the accuracy of GBM GRB localizations. We find that the reported statistical uncertainties on GBM localizations, which can be as small as 1°, underestimate the distance of the GBM positions to the true GRB locations and we attribute this to systematic uncertainties. The distribution of systematic uncertainties is well represented (68% confidence level) by a 3.°7 Gaussian with a non-Gaussian tail that contains about 10% of GBM-detected GRBs and extends to approximately 14°. A more complex model suggests that there is a dependence of the systematic uncertainty on the position of the GRB in spacecraft coordinates, with GRBs in the quadrants on the Y axis better localized than those on the X axis.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2015. Vol. 216, no 2, 32
Keyword [en]
GBM
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-184444DOI: 10.1088/0067-0049/216/2/32ISI: 000350899000011Scopus ID: 2-s2.0-84923384641OAI: oai:DiVA.org:kth-184444DiVA: diva2:916031
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QC 20160408

Available from: 2016-03-31 Created: 2016-03-31 Last updated: 2017-01-11Bibliographically approved

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Burgess, J. Michael
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Permanent link

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Citation style
  • apa
  • harvard1
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  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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