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Global Properties of High-Energy Emission from Gamma-Ray Bursts

Published online by Cambridge University Press:  22 July 2013

N. Omodei ,
G. Vianello ,
F. Piron ,
V. Vasileiou ,
S. Razzaque  and
the Fermi Large Area Telescope collaboration
N. Omodei
Affiliation:
Stanford University/KIPAC
G. Vianello
Affiliation:
Stanford University/KIPAC
F. Piron
Affiliation:
CNRS/IN2P3/LUPM
V. Vasileiou
Affiliation:
CNRS/IN2P3/LUPM
S. Razzaque
Affiliation:
GMU/NRL
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Abstract

In three years of observations the Large Area Telescope (LAT) on board the Fermi Gamma Ray Space Telescope has observed high-energy γ-ray emission from 35 gamma-ray bursts (GRBs). The first Fermi-LAT catalog of GRBs is in preparation within the Fermi LAT collaboration and will provide a systematic study of high-energy emission from GRBs. In this paper we present some of the main results, briefly discussing durations, energetics, time-resolved and time integrated LAT spectral analysis. We also discuss characteristics of LAT-detected emission such as its delayed onset and longer duration compared to emission detected by the GBM, and its power-law temporal decay at late times.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 61: Gamma-ray Bursts: 15 Years of GRB Afterglows – Progenitors, Environments and Host Galaxies from the Nearby to the Early Universe , 2013 , pp. 123 - 128
Copyright
© EAS, EDP Sciences 2013

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