Related papers: Prospects for Gamma-Ray Bursts detection by the Ch…

Discovery and Analysis of Afterglows from Poorly Localised GRBs with the Gravitational-wave Optical Transient Observer (GOTO) All-sky Survey

Gamma-ray bursts (GRBs), particularly those detected by wide-field instruments such as the Fermi/GBM, pose a challenge for optical follow-up due to their large initial localisation regions, leaving many GRBs without identified afterglows.…

High Energy Astrophysical Phenomena · Physics 2025-11-17 Amit Kumar , B. P. Gompertz , B. Schneider , S. Belkin , M. E. Wortley , A. Saccardi , D. O'Neill , K. Ackley , B. Rayson , A. de Ugarte Postigo , A. Gulati , D. Steeghs , D. B. Malesani , J. R. Maund , M. J. Dyer , S. Giarratana , M. Serino , Y. Julakanti , B. Kumar , D. Xu , R. A. J. Eyles-Ferris , Z. -P. Zhu , B. Warwick , Y. -D. Hu , I. Allen , G. Ramsay , R. L. C. Starling , J. Lyman , K. Ulaczyk , B. Godson , D. K. Galloway , V. S. Dhillon , P. O'Brien , K. Noysena , R. Kotak , R. P. Breton , L. K. Nuttall , D. Pollacco , J. Casares , T. L. Killestein , M. R. Kennedy , N. Habeeb , S. Moran , K. Wiersema , I. Worssam , D. L. Coppejans , C. A. Phillips , A. Martin-Carrillo , N. S. Pankov , J. F. Agüí Fernández , M. A. Aloy , J. An , G. E. Anderson , A. Bochenek , A. J. Castro-Tirado , X. Chen , L. Cotter , R. Dastidar , M. De Pasquale , V. D'Elia , Y. Fang , S. Y. Fu , J. P. U. Fynbo , D. H. Hartmann , L. B. He , L. Izzo , S. Q. Jiang , Y. Kawakubo , E. V. Klunko , A. J. Levan , X. -W. Liu , X. Liu , G. Lombardi , E. Maiorano , J. T. Palmerio , D. A. Perley , D. L. A. Pieterse , A. S. Pozanenko , G. Pugliese , A. Rossi , B. Sbarufatti , S. Bijavara Seshashayana , N. R. Tanvir , C. C. Thöne , A. J. van der Horst , S. D. Vergani , A. A. Volnova , R. A. M. J. Wijers , J. L. Wise

Interpretation and implication of the non-detection of GeV spectrum excess by Fermi gamma-ray Space Telescope in most GRBs

Since the launch of the Fermi Gamma-ray Space Telescope on 11 June 2008, significant detections of high energy emission have been reported only in six Gamma-ray Bursts (GRBs) until now. In this work we show that the lack of detection of a…

Cosmology and Nongalactic Astrophysics · Physics 2009-10-29 Yi-Zhong Fan

Redshift measurement of Fermi Blazars for the Cherenkov Telescope Array

Blazars are active galactic nuclei, and the most numerous High Energy (HE) and Very High Energy (VHE) gamma-ray emitters. Their optical emission is often dominated by non-thermal, and, in the case of BL Lacs, featureless continuum…

High Energy Astrophysical Phenomena · Physics 2019-08-14 P. Goldoni , S. Pita , C. Boisson , G. Cotter , D. A. Williams , E. Lindfors

Statistical Estimates of Coordinate Error Circles for LAT-detected GRBs

The GLAST mission to be launched in November 2007 will provide unique information about high energy photon fluxes from gamma-ray bursts. These data will be most useful when combined with multiwavelength observations that provide more…

Astrophysics · Physics 2011-11-09 Carl W. Akerlof , Fang Yuan

Search for Very High Energy Emission from Gamma-Ray Bursts using Milagro

Gamma-Ray Bursts (GRBs) have been detected at GeV energies by EGRET and models predict emission at > 100 GeV. Milagro is a wide field (2 sr) high duty cycle (> 90 %) ground based water Cherenkov detector that records extensive air showers…

Astrophysics · Physics 2009-11-13 Pablo M. Saz Parkinson

GRB 210704A: A Luminous Fast Blue Transient in a GRB Afterglow at $z = 2.34$

We present detailed, multi-wavelength analysis of GRB 210704A: a Fermi Gamma-ray Burst Monitor discovered and Fermi Large Area Telescope (LAT) detected gamma-ray burst (GRB). The burst is dominated by a short ($\approx 2$ s) pulse followed…

High Energy Astrophysical Phenomena · Physics 2026-04-17 Daniëlle L. A. Pieterse , Andrew J. Levan , Maria E. Ravasio , Jillian C. Rastinejad , Agnes P. C. van Hoof , Daniele B. Malesani , Nikhil Sarin , Gavin P. Lamb , Antonio Martin-Carrillo , Anya E. Nugent , Nial R. Tanvir , Peter G. Jonker , David Alexander Kann , José Feliciano Agüí Fernández , Edo Berger , Gregory Corcoran , Felice Cusano , Paolo D'Avanzo , Valerio D'Elia , Antonio de Ugarte Postigo , Dimple , Wen-fai Fong , Johan P. U. Fynbo , Luca Izzo , Elisabetta Maiorano , Andrea Melandri , Eliana Palazzi , Jonathan Quirola-Vásquez , Andrea Rossi , Alicia Rouco Escorial

High energy time lags of Gamma Ray Bursts

Positive lags between the arrival time of different photon energies are commonly observed in Gamma-Ray Bursts (GRBs), where soft photons lag behind harder ones. However, some GRBs exhibit the opposite behavior. In particular, Fermi LAT…

High Energy Astrophysical Phenomena · Physics 2025-05-21 C. Maraventano , G. Ghirlanda , L. Nava , T. Di Salvo , W. Leone , R. Iaria , L. Burderi , A. Tsvetkova

Proposed Next Generation GRB Mission: EXIST

A next generation Gamma Ray Burst (GRB) mission to follow the upcoming Swift mission is described. The proposed Energetic X-ray Imaging Survey Telescope, EXIST, would yield the limiting (practical) GRB trigger sensitivity, broad-band…

Astrophysics · Physics 2009-11-07 J. Grindlay , N. Gehrels , F. Harrison , R. Blandford , G. Fishman , C. Kouveliotou , D. H. Hartmann , S. Woosley , W. Craig , J. Hong

The MERger-event Gamma-Ray (MERGR) Telescope

We describe the MERger-event Gamma-Ray (MERGR) Telescope intended for deployment by ~2021. MERGR will cover from 20 keV to 2 MeV with a wide field of view (6 sr) using nineteen gamma-ray detectors arranged on a section of a sphere. The…

Instrumentation and Methods for Astrophysics · Physics 2017-11-13 L. J. Mitchell , J. E. Grove , B. F. Phlips , C. C. Cheung , M. Kerr , R. S. Woolf , M. S. Briggs , J. S. Perkins

Search for GeV Gamma Ray Bursts with the ARGO-YBJ Detector: Summary of Eight Years of Observations

The search for Gamma Ray Burst (GRB) emission in the energy range 1-100 GeV in coincidence with the satellite detection has been carried out using the Astrophysical Radiation with Ground-based Observatory at YangBaJing (ARGO-YBJ)…

High Energy Astrophysical Phenomena · Physics 2015-02-20 B. Bartoli , P. Bernardini , X. J. Bi , P. Branchini , A. Budano , P. Camarri , Z. Cao , R. Cardarelli , S. Catalanotti , S. Z. Chen , T. L. Chen , P. Creti , S. W. Cui , B. Z. Dai , A. D'Amone , Danzengluobu , I. De Mitri , B. D'Ettorre Piazzoli , T. Di Girolamo , G. Di Sciascio , C. F. Feng , Zhaoyang Feng , Zhenyong Feng , Q. B. Gou , Y. Q. Guo , H. H. He , Haibing Hu , Hongbo Hu , M. Iacovacci , R. Iuppa , H. Y. Jia , Labaciren , H. J. Li , G. Liguori , C. Liu , J. Liu , M. Y. Liu , H. Lu , L. L. Ma , X. H. Ma , G. Mancarella , S. M. Mari , G. Marsella , D. Martello , S. Mastroianni , P. Montini , C. C. Ning , M. Panareo , L. Perrone , P. Pistilli , F. Ruggieri , P. Salvini , R. Santonico , P. R. Shen , X. D. Sheng , F. Shi , A. Surdo , Y. H. Tan , P. Vallania , S. Vernetto , C. Vigorito , H. Wang , C. Y. Wu , H. R. Wu , L. Xue , Q. Y. Yang , X. C. Yang , Z. G. Yao , A. F. Yuan , M. Zha , H. M. Zhang , L. Zhang , X. Y. Zhang , Y. Zhang , J. Zhao , Zhaxiciren , Zhaxisangzhu , X. X. Zhou , F. R. Zhu , Q. Q. Zhu , G. Zizzi

A Search for Prompt Very High Energy Emission from Satellite-detected Gamma-ray Bursts using Milagro

Gamma-ray bursts (GRBs) have been detected up to GeV energies and are predicted by many models to emit in the very high energy (VHE, > 100 GeV) regime too. Detection of such emission would allow us to constrain GRB models. Since its launch,…

Astrophysics · Physics 2007-10-15 Milagro Collaboration , P. M. Saz Parkinson , B. L. Dingus

Direct evidence for preburst stage of gamma-ray burst from GRB 221009A data

Previous research on Lorentz invariance violation in photons from gamma-ray bursts (GRBs) suggested a scenario where multi-GeV photons could be emitted before lower-energy photons at the GRB source frame. This implies the existence of a new…

High Energy Astrophysical Phenomena · Physics 2024-10-17 Qing Liu , Hanlin Song , Bo-Qiang Ma

Gamma Ray Bursts in the Era of Rapid Followup

We present a status report on the study of gamma-ray bursts (GRB) in the era of rapid follow-up using the world's largest robotic optical telescopes - the 2-m Liverpool and Faulkes telescopes. Within the context of key unsolved issues in…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-15 C. G. Mundell , C. Guidorzi , I. A. Steele

Gamma-Ray Bursts at high and very high energies

Gamma-Ray Bursts (GRBs) are extra-galactic and extremely energetic transient emissions of gamma rays, which are thought to be associated with the death of massive stars or the merger of compact objects in binary systems. Their huge…

High Energy Astrophysical Phenomena · Physics 2016-07-20 F. Piron

Milagro Constraints on Very High Energy Emission from Short Duration Gamma-Ray Bursts

Recent rapid localizations of short, hard gamma-ray bursts (GRBs) by the Swift and HETE satellites have led to the observation of the first afterglows and the measurement of the first redshifts from this type of burst. Detection of >100 GeV…

Astrophysics · Physics 2009-06-23 A. A. Abdo , B. T. Allen , D. Berley , E. Blaufuss , S. Casanova , B. L. Dingus , R. W. Ellsworth , M. M. Gonzalez , J. A. Goodman , E. Hays , C. M. Hoffman , B. E. Kolterman , C. P. Lansdell , J. T. Linnemann , J. E. McEnery , A. I. Mincer , P. Nemethy , D. Noyes , J. M. Ryan , F. W. Samuelson , P. M. Saz Parkinson , A. Shoup , G. Sinnis , A. J. Smith , G. W. Sullivan , V. Vasileiou , G. P. Walker , D. A. Williams , X. W. Xu , G. B. Yodh

AGN Population Studies for CTA

Following the great success of the current Imaging Atmospheric Cherenkov Telescopes, the next generation gamma-ray telescope arrays, Cherenkov Telescope Array (CTA), is being prepared. CTA will have an order of magnitude higher sensitivity…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Yoshiyuki Inoue

FERMI constraints on the high energy, ~1 GeV, emission of long GRBs

We investigate the constraints imposed on the luminosity function (LF) of long duration Gamma Ray Bursts (LGRBs) by the flux distribution of bursts detected by the GBM at ~1 MeV, and the implications of the non detection of the vast…

High Energy Astrophysical Phenomena · Physics 2015-05-18 Dafne Guetta , Elena Pian , Eli Waxman

Optical and near-infrared follow-up observations of four Fermi/LAT GRBs : Redshifts, afterglows, energetics and host galaxies

Fermi can measure the spectral properties of gamma-ray bursts over a very large energy range and is opening a new window on the prompt emission of these energetic events. Localizations by the instruments on Fermi in combination with…

High Energy Astrophysical Phenomena · Physics 2015-03-13 S. McBreen , T. Krühler , A. Rau , J. Greiner , D. A. Kann , S. Savaglio , P. Afonso , C. Clemens , R. Filgas , S. Klose , A. Küpüc Yoldas , F. Olivares E. , A. Rossi , G. P. Szokoly , A. Updike , A. Yoldas

Optical Observations of Gamma-Ray Bursts, the Discovery of Supernovae 2005bv, 2005ee, and 2006ak, and Searches for Transients Using the "MASTER" Robotic Telescope

We present the results of observations obtained using the MASTER robotic telescope in 2005 - 2006, including the earliest observations of the optical emission of the gamma-ray bursts GRB 050824 and GRB 060926. Together with later…

Astrophysics · Physics 2009-06-25 V. M. Lipunov , V. G. Kornilov , A. V. Krylov , N. V. Tyurina , A. A. Belinski , E. S. Gorbovskoy , D. A. Kuvshinov , P. A. Gritsyk , G. A. Antipov , G. V. Borisov , A. V. Sankovich , V. V. Vladimirov , V. I. Vybornov , A. S. Kuznetsov

Detection of three Gamma-Ray Burst host galaxies at $z\sim6$

Long-duration Gamma-Ray Bursts (GRBs) allow us to pinpoint and study star-forming galaxies in the early universe, thanks to their orders of magnitude brighter peak luminosities compared to other astrophysical sources, and their association…

Astrophysics of Galaxies · Physics 2016-07-14 J. T. W. McGuire , N. R. Tanvir , A. J. Levan , M. Trenti , E. R. Stanway , J. M. Shull , K. Wiersema , D. A. Perley , R. L. C. Starling , M. Bremer , J. T. Stocke , J. Hjorth , J. E. Rhoads , E. Curtis-Lake , S. Schulze , E. M. Levesque , B. Robertson , J. P. U. Fynbo , R. S. Ellis , A. S. Fruchter