論文

査読有り
2019年12月1日

Bright Gamma-Ray Flares Observed in GRB 131108A

Astrophysical Journal Letters
  • M. Ajello
  • M. Arimoto
  • K. Asano
  • M. Axelsson
  • L. Baldini
  • G. Barbiellini
  • D. Bastieri
  • R. Bellazzini
  • A. Berretta
  • E. Bissaldi
  • R. D. Blandford
  • R. Bonino
  • E. Bottacini
  • J. Bregeon
  • P. Bruel
  • R. Buehler
  • S. Buson
  • R. A. Cameron
  • R. Caputo
  • P. A. Caraveo
  • E. Cavazzuti
  • S. Chen
  • G. Chiaro
  • S. Ciprini
  • D. Costantin
  • S. Cutini
  • F. D'Ammando
  • P. De La Torre Luque
  • F. De Palma
  • N. Di Lalla
  • L. Di Venere
  • F. Fana Dirirsa
  • S. J. Fegan
  • A. Franckowiak
  • Y. Fukazawa
  • P. Fusco
  • F. Gargano
  • D. Gasparrini
  • N. Giglietto
  • F. Giordano
  • M. Giroletti
  • D. Green
  • I. A. Grenier
  • M. H. Grondin
  • S. Guiriec
  • E. Hays
  • D. Horan
  • G. Jóhannesson
  • D. Kocevski
  • M. Kovac'Evic
  • M. Kuss
  • S. Larsson
  • L. Latronico
  • J. Li
  • I. Liodakis
  • F. Longo
  • F. Loparco
  • M. N. Lovellette
  • P. Lubrano
  • S. Maldera
  • A. Manfreda
  • G. Martí-Devesa
  • M. N. Mazziotta
  • J. E. McEnery
  • I. Mereu
  • P. F. Michelson
  • 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
  • Z. Pei
  • M. Persic
  • M. Pesce-Rollins
  • V. Petrosian
  • F. Piron
  • H. Poon
  • T. A. Porter
  • G. Principe
  • J. L. Racusin
  • S. Rainó
  • R. Rando
  • B. Rani
  • M. Razzano
  • A. Reimer
  • O. Reimer
  • D. Serini
  • C. Sgró
  • E. J. Siskind
  • G. Spandre
  • P. Spinelli
  • 全て表示

886
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記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.3847/2041-8213/ab564f

© 2019. The American Astronomical Society. All rights reserved.. GRB 131108A is a bright long gamma-ray burst (GRB) detected by the Large Area Telescope and the Gamma-ray Burst Monitor on board the Fermi Gamma-ray Space Telescope. Dedicated temporal and spectral analyses reveal three γ-ray flares dominating above 100 MeV, which are not directly related to the prompt emission in the Gamma-ray Burst Monitor band (10 keV-10 MeV). The high-energy light curve of GRB 131108A (100 MeV-10 GeV) shows an unusual evolution: a steep decay, followed by three flares with an underlying emission, and then a long-lasting decay phase. The detailed analysis of the γ-ray flares finds that the three flares are 6-20 times brighter than the underlying emission and are similar to each other. The fluence of each flare, (1.6 ∼ 2.0) × 10-6 erg cm-2, is comparable to that of emission during the steep decay phase, 1.7 × 10-6 erg cm-2. The total fluence from three γ-ray flares is 5.3 × 10-6 erg cm-2. The three γ-ray flares show properties similar to the usual X-ray flares that are sharp flux increases, occurring in ∼50% of afterglows, in some cases well after the prompt emission. Also, the temporal and spectral indices during the early steep decay phase and the decaying phase of each flare show the consistency with a relation of the curvature effect (α = 2 + β ), which is the first observational evidence of the high-latitude emission in the GeV energy band.

リンク情報
DOI
https://doi.org/10.3847/2041-8213/ab564f
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85077649318&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85077649318&origin=inward
ID情報
  • DOI : 10.3847/2041-8213/ab564f
  • ISSN : 2041-8205
  • eISSN : 2041-8213
  • SCOPUS ID : 85077649318

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