A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog

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Autorinnen und Autoren: Ajello M, Arimoto M, Axelsson M, Baldini L, Barbiellini G, Bastieri D, Bellazzini R, Bhat PN, Bissaldi E, Blandford RD, Bonino R, Bonnell J, Bottacini E, Bregeon J, Bruel P, Buehler R, Cameron RA, Caputo R, Caraveo PA, Cavazzuti E, Chen S, Cheung CC, Chiaro G, Ciprini S, Costantin D, Crnogorcevic M, Cutini S, Dainotti M, D'Ammando F, Luque PDLT, De Palma F, Desai A, Desiante R, Di Lalla N, Di Venere L, Dirirsa FF, Fegan SJ, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Green D, Grenier IA, Grove JE, Guiriec S, Hays E, Hewitt JW, Horan D, Johannesson G, Kocevski D, Kuss M, Latronico L, Li J, Longo F, Loparco F, Lovellette MN, Lubrano P, Maldera S, Manfreda A, Marti-Devesa G, Mazziotta MN, Mereu , Meyer M, Michelson PF, Mirabal N, Mitthumsiri W, Mizuno T, Monzani ME, Moretti E, Morselli A, Moskalenko I, Negro M, Nuss E, Ohno M, Omodei N, Orienti M, Orlando E, Palatiello M, Paliya VS, Paneque D, Persic M, Pesce-Rollins M, Petrosian , Piron F, Poolakkil S, Poon H, Porter TA, Principe G, Racusin JL, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Reposeur T, Ryde F, Serini D, Sgro C, Siskind EJ, Sonbas E, Spandre G, Spinelli P, Suson DJ, Tajima H, Takahashi M, Tak D, Thayer JB, Torres DF, Troja E, Valverde J, Veres P, Vianello G, Von Kienlin A, Wood K, Yassine M, Zhu S, Zimmer S
Zeitschrift: Astrophysical Journal
Jahr der Veröffentlichung: 2019
Band: 878
Heftnummer: 1
ISSN: 0004-637X
eISSN: 1538-4357


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.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Funk, Stefan Prof. Dr.
Lehrstuhl für Physik
Principe, Giacomo
Lehrstuhl für Physik

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Autonomous University of Barcelona (UAB) / Universitat Autònoma de Barcelona
Clemson University
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École Polytechnique - Université Paris-Saclay
Hiroshima University
Institute of Space Sciences (IEEC-CSIC)
Italian Space Agency / Agenzia Spaziale Italiana (ASI)
Kanazawa University / 金沢大学
Leopold-Franzens-Universität Innsbruck / University of Innsbruck
Mahidol University / มหาวิทยาลัยมหิดล
Max Planck Institute for Gravitational Physics / Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Max-Planck-Institut für Physik (Werner-Heisenberg-Institut, MPP) / Max Planck Institute for Physics
National Aeronautics and Space Administration (NASA)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN)
NYCB Real-Time Computing, Inc.
Praxis, Inc.
Purdue University Northwest / Purdue University Calumet
Stanford University
Stockholm University / Stockholms universitet
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University of Alabama in Huntsville (UAH)
University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro
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U.S. Naval Research Laboratory


Ajello, M., Arimoto, M., Axelsson, M., Baldini, L., Barbiellini, G., Bastieri, D.,... Zimmer, S. (2019). A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog. Astrophysical Journal, 878(1). https://dx.doi.org/10.3847/1538-4357/ab1d4e

Ajello, M., et al. "A Decade of Gamma-Ray Bursts Observed by Fermi-LAT: The Second GRB Catalog." Astrophysical Journal 878.1 (2019).


Zuletzt aktualisiert 2019-23-08 um 08:33