2015
DOI: 10.1088/0067-0049/216/2/32
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LOCALIZATION OF GAMMA-RAY BURSTS USING THE FERMI GAMMA-RAY BURST MONITOR

Abstract: The Fermi Gamma-ray Burst Monitor (GBM) has detected over 1400 Gamma-Ray Bursts (GRBs) since it began science operations in July, 2008. We -2use 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 (IPN), 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 th… Show more

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Cited by 112 publications
(128 citation statements)
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“…The lower fraction of GBM short GRBs (20.7%) compared to the one measured by BATSE (24%) is due to an excess of long events detected by GBM's longer timescale trigger algorithms. about 10% of GBM-detected GRBs and extends to approximately 14 o [3]. Moreover, probability maps are produced for every burst through convolution of the statistical uncertainty with the best current model for the systematic errors.…”
Section: The Third Gbm Trigger Catalogmentioning
confidence: 99%
“…The lower fraction of GBM short GRBs (20.7%) compared to the one measured by BATSE (24%) is due to an excess of long events detected by GBM's longer timescale trigger algorithms. about 10% of GBM-detected GRBs and extends to approximately 14 o [3]. Moreover, probability maps are produced for every burst through convolution of the statistical uncertainty with the best current model for the systematic errors.…”
Section: The Third Gbm Trigger Catalogmentioning
confidence: 99%
“…The method is adapted from the method used for GBM localization of GRBs (Connaughton et al 2015), with a cruder background fitting method. We use data between 12 and 50 keV and the model rates more suitable for sources with softer energy spectra: galactic transients (power law with index = −2), solar flares (power law with index = −3), and type I XRBs (blackbody with temperature = 4 keV).…”
Section: Localizationmentioning
confidence: 99%
“…These events appear to have a hard spectrum and thus might be initially classified as uGRBs, but unlike GRBs their light curves in the range 50-300 keV are very similar for all 12 NaI detectors. This produces a poor c 2 in the localization fit and we use a cut-off in c 2 of 1000 to reject these particle events, more tolerant than reported in Connaughton et al (2015) because the quality of the background fits over the low-energy channel data analyzed here is more variable, and even real astrophysical events may produce localizations with large c 2 values. All other events are considered to be XRB candidates.…”
Section: Localizationmentioning
confidence: 99%
See 1 more Smart Citation
“…• (Connaughton et al 2015). The first GBM onflight localization, distributed as a GCN notice, had an error radius of 3.85…”
Section: High-energy Observationsmentioning
confidence: 99%