Localization of Gamma-Ray Bursts Using the Fermi Gamma-Ray Burst Monitor
| Autor: | Melissa Gibby, V. Pelassa, Valerie Connaughton, A. von Kienlin, Gerard Fitzpatrick, Sylvain Guiriec, J. M. Burgess, R. M. Kippen, Misty Giles, Sheila McBreen, David Byrne, S. McGlynn, Peter Jenke, William S. Paciesas, Dave Tierney, P. N. Bhat, Bin-Bin Zhang, Adam Goldstein, Robert D. Preece, Michael S. Briggs, Suzanne Foley, Shaolin Xiong, A. J. van der Horst, Hoi-Fung Yu, Colleen A. Wilson-Hodge, Charles A. Meegan, David Gruber, Jochen Greiner |
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| Přispěvatelé: | High Energy Astrophys. & Astropart. Phys (API, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics Systematic error Gaussian Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astronomy and Astrophysics Astrophysics law.invention Telescope symbols.namesake Space and Planetary Science law Position (vector) symbols Gamma-ray burst Interplanetary spaceflight Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics (astro-ph.IM) Fermi Gamma-ray Space Telescope |
| Zdroj: | The Astrophysical Journal. Supplement Series, 216(2):32. IOP Publishing Ltd. |
| ISSN: | 0067-0049 |
| Popis: | The Fermi Gamma-ray Burst Monitor (GBM) has detected over 1400 Gamma-Ray Bursts (GRBs) since it began science operations in July, 2008. 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 (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 degree, 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 degree Gaussian with a non-Gaussian tail that contains about 10% of GBM-detected GRBs and extends to approximately 14 degrees. 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. accepted for publication in the Astrophysical Journal Supplement Series |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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