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The first Fermi-Lat gamma-ray burst catalog
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-4378-8785
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2013 (English)In: Astrophysical Journal Supplement Series, ISSN 0067-0049, E-ISSN 1538-4365, Vol. 209, no 1, 11- p.Article in journal (Refereed) Published
Abstract [en]

In three years of observations since the beginning of nominal science operations in 2008 August, the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope has observed high-energy (greater than or similar to 20 MeV) gamma-ray emission from 35 gamma-ray bursts (GRBs). Among these, 28 GRBs have been detected above 100 MeV and 7 GRBs above similar to 20 MeV. The first Fermi-LAT catalog of GRBs is a compilation of these detections and provides a systematic study of high-energy emission from GRBs for the first time. To generate the catalog, we examined 733 GRBs detected by the Gamma-Ray Burst Monitor (GBM) on Fermi and processed each of them using the same analysis sequence. Details of the methodology followed by the LAT collaboration for the GRB analysis are provided. We summarize the temporal and spectral properties of the LAT-detected GRBs. We also discuss characteristics of LAT-detected emission such as its delayed onset and longer duration compared with emission detected by the GBM, its power-law temporal decay at late times, and the fact that it is dominated by a power-law spectral component that appears in addition to the usual Band model.

Place, publisher, year, edition, pages
2013. Vol. 209, no 1, 11- p.
Keyword [en]
catalogs, gamma-ray burst: general, methods: data analysis
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-136487DOI: 10.1088/0067-0049/209/1/11ISI: 000326571000011ScopusID: 2-s2.0-84887959508OAI: diva2:677742
Knut and Alice Wallenberg FoundationSwedish Research Council

QC 20131210

Available from: 2013-12-10 Created: 2013-12-05 Last updated: 2013-12-10Bibliographically approved

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Axelsson, MagnusJackson, Miranda S.Moretti, ElenaNymark, TanjaRyde, Felix
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