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Title: A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog
Authors: M. Ajello
M. Arimoto
M. Axelsson
L. Baldini
G. Barbiellini
D. Bastieri
R. Bellazzini
P. N. Bhat
E. Bissaldi
R. D. Blandford
R. Bonino
J. Bonnell
E. Bottacini
J. Bregeon
P. Bruel
R. Buehler
R. A. Cameron
R. Caputo
P. A. Caraveo
E. Cavazzuti
S. Chen
C. C. Cheung
G. Chiaro
S. Ciprini
D. Costantin
M. Crnogorcevic
S. Cutini
M. Dainotti
F. D'Ammando
P. D.L. Torre Luque
F. D. Palma
A. Desai
R. Desiante
N. Di Lalla
L. Di Venere
F. Fana Dirirsa
S. J. Fegan
A. Franckowiak
Y. Fukazawa
S. Funk
P. Fusco
F. Gargano
D. Gasparrini
N. Giglietto
F. Giordano
M. Giroletti
D. Green
I. A. Grenier
J. E. Grove
S. Guiriec
E. Hays
J. W. Hewitt
D. Horan
G. Jóhannesson
D. Kocevski
M. Kuss
L. Latronico
J. Li
F. Longo
F. Loparco
M. N. Lovellette
P. Lubrano
S. Maldera
A. Manfreda
G. Marti-Devesa
M. N. Mazziotta
I. Mereu
M. Meyer
P. F. Michelson
N. Mirabal
W. Mitthumsiri
T. Mizuno
M. E. Monzani
E. Moretti
A. Morselli
I. V. Moskalenko
M. Negro
E. Nuss
M. Ohno
N. Omodei
M. Orienti
E. Orlando
M. Palatiello
V. S. Paliya
D. Paneque
M. Persic
M. Pesce-Rollins
V. Petrosian
F. Piron
S. Poolakkil
H. Poon
T. A. Porter
G. Principe
J. L. Racusin
S. Raino
R. Rando
M. Razzano
S. Razzaque
A. Reimer
O. Reimer
Center for Space Plasma and Aeronomic Research
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione di Padova
Laboratoire Univers et Particules de Montpellier
Universite Paris-Saclay
Laboratoire Leprince-Ringuet
Kavli Institute for Particle Astrophysics and Cosmology
INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Milan
University Science Institute Reykjavik
Agenzia Spaziale Italiana
Hiroshima University
Deutsches Elektronen-Synchrotron (DESY)
Osservatorio Astronomico di Trieste
Università di Pisa
Stockholms universitet
Alma Mater Studiorum Università di Bologna
Naval Research Laboratory
Clemson University
University of Maryland, Baltimore County
Kanazawa University
Universitat Autònoma de Barcelona
Università degli Studi di Bari
Istituto Nazionale di Fisica Nucleare - INFN
University of Maryland
Università degli Studi di Trieste
Mahidol University
Istituto Di Radioastronomia, Bologna
Università degli Studi di Torino
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)
Medizinische Universitat Innsbruck
NASA Goddard Space Flight Center
The George Washington University
Università degli Studi di Perugia
The Royal Institute of Technology (KTH)
Friedrich-Alexander-Universität Erlangen-Nürnberg
University of Johannesburg
Università degli Studi di Padova
University of North Florida
Keywords: Earth and Planetary Sciences
Issue Date: 10-Jun-2019
Citation: Astrophysical Journal. Vol.878, No.1 (2019)
Abstract: © 2019. The American Astronomical Society. All rights reserved. The Large Area Telescope (LAT) aboard the Fermi spacecraft routinely observes high-energy emission from gamma-ray bursts (GRBs). Here we present the second catalog of LAT-detected GRBs, covering the first 10 yr of operations, from 2008 to 2018 August 4. A total of 186 GRBs are found; of these, 91 show emission in the range 30-100 MeV (17 of which are seen only in this band) and 169 are detected above 100 MeV. Most of these sources were discovered by other instruments (Fermi/GBM, Swift/BAT, AGILE, INTEGRAL) or reported by the Interplanetary Network (IPN); the LAT has independently triggered on four GRBs. This catalog presents the results for all 186 GRBs. We study onset, duration, and temporal properties of each GRB, as well as spectral characteristics in the 100 MeV-100 GeV energy range. Particular attention is given to the photons with the highest energy. Compared with the first LAT GRB catalog, our rate of detection is significantly improved. The results generally confirm the main findings of the first catalog: the LAT primarily detects the brightest GBM bursts, and the high-energy emission shows delayed onset as well as longer duration. However, in this work we find delays exceeding 1 ks and several GRBs with durations over 10 ks. Furthermore, the larger number of LAT detections shows that these GRBs not only cover the high-fluence range of GBM-detected GRBs but also sample lower fluences. In addition, the greater number of detected GRBs with redshift estimates allows us to study their properties in both the observer and rest frames. Comparison of the observational results with theoretical predictions reveals that no model is currently able to explain all results, highlighting the role of LAT observations in driving theoretical models.
ISSN: 15384357
Appears in Collections:Scopus 2019

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