author={Aous A. Abdo and Markus Ackermann and Makoto Arimoto and Katsuaki Asano and William Atwood and Magnus Axelsson and Luca Baldini and Jean Ballet and David L. Band and Guido Barbiellini and Matthew G. Baring and Denis Bastieri and Milan Battelino and Brian M. Baughman and Keith C. Bechtol and F. Bellardi and Ronaldo Bellazzini and Bijan Berenji and P. Narayana Bhat and Elisabetta Bissaldi and Roger D. Blandford and Elliott D. Bloom and Gilles Bogaert and J. Bogart and Emanuele Bonamente and Jerry T. Bonnell and A. W. Borgland and Aurelien Bouvier and Johan Bregeon and Alessandro Brez and M S Briggs and Monica Brigida and Pascal Bruel and T. H. Burnett and David N. Burrows and G. Busetto and G. A. Caliandro and R. A. Cameron and Patrizia A. Caraveo and J. M. Casandjian and Marco Ceccanti and Claudia Cecchi and Annalisa Celotti and Eric Charles and A. Chekhtman and C. C. Cheung and J. Chiang and Stefano Ciprini and Richard O. Claus and J. Cohen-Tanugi and Lynn R. Cominsky and Valerie Connaughton and Janet M. Conrad and L Costamante and S. Cutini and M. Deklotz and Charles D. Dermer and Alessandro De Angelis and Francesco de Palma and S. W. Digel and B. L. Dingus and Eduardo do Couto e Silva and P. Drell and Robert D. Dubois and Denis Dumora and Yvonne Edmonds and P. A. Evans and Davide Fabiani and Christian Farnier and Cecilia Favuzzi and Justin D. Finke and Gerald J. Fishman and W. B. Focke and Marco Frailis and Yasushi Fukazawa and Stefan Funk and Piergiorgio Fusco and Fabio Gargano and Dario Gasparrini and Neil A. Gehrels and Stefano Germani and Berrie Giebels and Nicola Giglietto and Paolo Giommi and Francesco Giordano and Tom Glanzman and Gary Lunt Godfrey and Adam Goldstein and Jonathan Granot and Jochen Greiner and Isabelle A. Grenier and M.-H. Grondin and J. E. Grove and Lucas Guillemot and Sylvain Guiriec and George Haller and Yoshitaka Hanabata and Alice K. Harding and Morihiro Hayashida and Elizabeth Hays and J A Hernando Morat and Andrew S. Hoover and Richard Edward Hughes and Guðlaugur J{\'o}hannesson and A. S. Johnson and R. P. Johnson and Tyrel J. Johnson and W. Neil Johnson and Tuneyoshi Kamae and Hideaki Katagiri and Jun Kataoka and Alicia T. Kavelaars and Nobuyuki Kawai and Heather M. Kelly and Jamie A. Kennea and Matthew Kerr and R. Marc Kippen and J{\"u}rgen Kn{\"o}dlseder and Daniel Kocevski and Matej Koci{\'a}n and Nu. Komin and Chryssa Kouveliotou and Frederick Gabriel Ivar Kuehn and Michael Kuss and Joshua Lande and Dani{\`e}le Landriu and Stefan Larsson and Luca Latronico and Claudia Lavalley and B. L. Lee and S.-H. Lee and Marianne Lemoine-Goumard and Giselher G. Lichti and Francesco Longo and Francesco Loparco and Benoit Lott and Michael N. Lovellette and Pasquale Lubrano and Grzegorz Madejski and Alexei Makeev and B. Marangelli and Mario Nicola Mazziotta and Sheila McBreen and Julie Mcenery and S. Mcglynn and Charles A. Meegan and P. M{\'e}sz{\'a}ros and Christine Meurer and P. F. Michelson and M. Minuti and N. Mirizzi and Warit Mitthumsiri and Tsunefumi Mizuno and Alexander A Moiseev and Claudia Del Monte and M. E. Monzani and Enrico Moretti and A. Morselli and Igor V. Moskalenko and Simona Murgia and Takeshi Nakamori and D. Nelson and P. L. Nolan and Jay Norris and Eric Nuss and Masanori Ohno and Takashi Ohsugi and Akira Okumura and Nicola Omodei and E. Orlando and J. F. Ormes and Masanobu Ozaki and William S. Paciesas and D. Paneque and J. H. Panetta and Damien Parent and V{\'e}ronique Pelassa and Marianna Pepe and Matteo Perri and Melissa Pesce-Rollins and Vah{\'e} Petrosian and Michele Pinchera and F. Piron and Troy A. Porter and Robert D. Preece and S. Rain{\'o} and Enrico Ramirez-Ruiz and R. Rando and Emilio Rapposelli and Massimiliano Razzano and Soebur Razzaque and Nanda Rea and Anita Reimer and O. Reimer and Thierry Reposeur and Luis Carlos Reyes and Steven M. Ritz and L. S. Rochester and A. Y. Rodr{\'i}guez and Markus Roth and Felix Ryde and Hartmut Sadrozinski and David Sanchez and Andreas A. C. Sander and Pablo M. Saz Parkinson and Jeffrey D. Scargle and Terry LeRoy Schalk and Kenneth N. Segal and Carmelo Sgro’ and Takashi Shimokawabe and Eric J. Siskind and D. A. Smith and P. D. Smith and Gloria Spandre and Paolo Spinelli and Michael Stamatikos and J. L. Starck and Floyd W. Stecker and Helmut Steinle and Thomas E. Stephens and Mark S. Strickman and Daniel J. Suson and Gianpiero Tagliaferri and Hiroyasu Tajima and H. Takahashi and T. Takahashi and T. Tanaka and Alicia Tenze and Jana Thayer and John Gregg Thayer and D. J. Thompson and Luigi Tibaldo and Diego F. Torres and Gino Tosti and Andrea Tramacere and Massimiliano Turri and S. Tuvi and T. L. Usher and Alexander J. van der Horst and L. Vigiani and Neils Vilchez and Vincenzo Vitale and Andreas von Kienlin and A. P. Waite and D. A. Williams and Colleen A. Wilson-Hodge and B. L. Winer and Kent S. Wood and X. F. Wu and Ryo Yamazaki and Tomi Ylinen and Marcus Ziegler},
  journal={The Astrophysical Journal Letters},
  pages={L127 - L132}
The Fermi observatory is advancing our knowledge of gamma-ray bursts (GRBs) through pioneering observations at high energies, covering more than seven decades in energy with the two on-board detectors, the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM). Here, we report on the observation of the long GRB 090217A which triggered the GBM and has been detected by the LAT with a significance greater than 9σ. We present the GBM and LAT observations and on-ground analyses, including… 


We report on the observation of the bright, long gamma-ray burst (GRB), GRB 090902B, by the Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) instruments on-board the Fermi observatory.

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

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

Gamma-ray burst detection prospects for next generation ground-based VHE facilities

Gamma-ray Bursts (GRB) were discovered by satellite-based detectors as powerful sources of transient γ-ray emission. The Fermi satellite detected an increasing number of these events with its

Gamma-ray burst observations by Fermi Large Area Telescope revisited: new candidates found

We search the Fermi Large Area Telescope (LAT) photon data base for an extended gamma-ray emission which could be associated with any of the 581 previously detected gamma-ray bursts (GRBs) visible to

Investigating the Nature of Late-time High-energy GRB Emission through Joint Fermi/Swift Observations

It is speculated that the primary difference between GRBs with LAT afterglow detections and the non-detected population may be in the type of circumstellar environment in which these bursts occur, with late-time LAT detections preferentially selecting GRBs that occur in low wind-like circumburst density profiles.

IACT observations of gamma-ray bursts: prospects for the Cherenkov Telescope Array

Gamma rays at rest frame energies as high as 90 GeV have been reported from gamma-ray bursts (GRBs) by the Fermi Large Area Telescope (LAT). There is considerable hope that a confirmed GRB detection

Fermi-LAT Observations of the Gamma-Ray Burst GRB 130427A

Temporal and spectral analyses of GRB 130427A challenge the widely accepted model that the nonthermal high-energy emission in the afterglow phase of GRBs is synchrotron emission radiated by electrons accelerated at an external shock.


We report on the detailed analysis of the high-energy extended emission from the short gamma-ray burst (GRB) 081024B detected by the Fermi Gamma-ray Space Telescope. Historically, this represents the


We report on the detailed analysis of the high-energy extended emission from the short Gamma-Ray Burst (GRB) 081024B, detected by the Fermi Gamma-ray Space Telescope. Historically, this represents




We report on the detailed analysis of the high-energy extended emission from the short gamma-ray burst (GRB) 081024B detected by the Fermi Gamma-ray Space Telescope. Historically, this represents the

Observations of GRB 990123 by the Compton Gamma Ray Observatory

GRB 990123 was the first burst from which simultaneous optical, X-ray, and gamma-ray emission was detected; its afterglow has been followed by an extensive set of radio, optical, and X-ray

AGILE detection of delayed gamma-ray emission from GRB 080514B

GRB 080514B is the first gamma ray burst (GRB), since the time o f EGRET, for which individual photons of energy above several tens of MeV have been detected with a pair-conversion tracker telescope.

BATSE Observations of Gamma-Ray Burst Tails

With the discovery of low-energy radiation appearing to come from the site of gamma-ray bursts in the hours to weeks after the initial burst of gamma rays, it would appear that astronomers have seen


The Gamma-Ray Burst Monitor (GBM) will significantly augment the science return from the Fermi Observatory in the study of gamma-ray bursts (GRBs). The primary objective of GBM is to extend the

Detection of a γ-ray burst of very long duration and very high energy

ALTHOUGH γ-ray bursts (GRBs) have been known for more than 20 years, their origin remains mysterious1. Suggestions have ranged from nearby colliding comets2 to merging neutron stars at cosmological

Broadband observations of the naked-eye γ-ray burst GRB 080319B

Observations of the extraordinarily bright prompt optical and γ-ray emission of GRB 080319B that provide diagnostics within seconds of its formation, followed by broadband observations of the afterglow decay that continued for weeks.

Temporal Evolution of Pair Attenuation Signatures in Gamma-Ray Burst Spectra

The spectra obtained above 100 MeV by the EGRET experiment aboard the Compton Gamma Ray Observatory for a handful of gamma-ray bursts (GRBs) have given no indication of any spectral attenuation that

Explaining the High-Energy Spectral Component in GRB 941017

The gamma-ray burst (GRB) of 1994 October 17 (GRB 941017) showed a distinct high-energy spectral component extending from ≲a few to ≳200 MeV, in addition to the typical GRB emission, which peaked at