Related papers: Multi-wavelength radiation models for low-luminosi…

Synchrotron Self-Compton Emission in the Two-Component Jet Model for Gamma-Ray Bursts

Gamma-ray bursts (GRBs) are intense bursts of high-energy photons (prompt emissions) caused by relativistic jets. After the emissions, multi-wavelength afterglows, from radio to very-high-energy (VHE) gamma-ray, last for more than a few…

High Energy Astrophysical Phenomena · Physics 2023-01-10 Yuri Sato , Kaori Obayashi , B. Theodre Zhang , Shuta J. Tanaka , Kohta Murase , Yutaka Ohira , Ryo Yamazaki

Ultra High Energy Cosmic Rays in light of the Lorentz Invariance Violation Effects within the Proton Sector

Tiny Lorentz Invariance Violation (LIV) effects, potentially arising from quantum gravity-induced spacetime structures, may also manifest in the proton sector, offering a plausible pathway to test Planck-scale physics through high-energy…

High Energy Physics - Phenomenology · Physics 2025-05-27 Guo-Li Liu , Xinbo Su , Fei Wang

Time dependent numerical model for the very high energy emissions of distant gamma-ray busrt GRB 201216C

Recently, the MAGIC Collaboration reported a $\sim 5\sigma$ statistical significance of the very-high-energy (VHE) emission from a distant GRB, GRB 201216C. Such distant GRB may be effectively absorbed by the extragalactic background light…

High Energy Astrophysical Phenomena · Physics 2022-06-15 Yan Huang

Ultra High Energy Cosmic Rays from Black Hole Jets of Radio Galaxies

The Auger Collaboration reports that the arrival directions of >60 EeV ultra-high energy cosmic rays (UHECRs) cluster along the supergalactic plane and correlate with active galactic nuclei (AGN) within ~100 Mpc. The association of several…

Astrophysics · Physics 2009-08-05 C. D. Dermer , S. Razzaque , J. D. Finke , A. Atoyan

VHE Gamma-ray Afterglow Emission from Nearby GRBs

Gamma-ray Bursts (GRBs) are among the potential extragalactic sources of very-high-energy (VHE) gamma-rays. We discuss the prospects of detecting VHE gamma-rays with current ground-based Cherenkov instruments during the afterglow phase.…

Astrophysics · Physics 2010-11-11 P. H. Tam , R. R. Xue , S. J. Wagner , B. Behera , Y. Z. Fan , D. M. Wei

Very High Energy Gamma-ray Afterglow Emission of Nearby Gamma-ray Bursts

The synchrotron self-Compton (SSC) emission from Gamma-ray Burst (GRB) forward shock can extend to the very-high-energy (VHE; $E_\gamma > $100 GeV) range. Such high energy photons are rare and are attenuated by the cosmic infrared…

High Energy Astrophysical Phenomena · Physics 2015-05-13 R. R. Xue , P. H. Tam , S. J. Wagner , B. Behera , Y. Z. Fan , D. M. Wei

The Hard VHE Gamma-ray Emission in High-Redshift TeV Blazars: Comptonization of Cosmic Microwave Background Radiation in an Extended Jet?

Observations of very-high-energy (VHE, E > 250 GeV) gamma-ray emission from several blazars at z > 0.1 have placed stringent constraints on the elusive spectrum and intensity of the intergalactic infrared background radiation (IIBR).…

Astrophysics · Physics 2009-11-13 Markus Boettcher , Charles D. Dermer , Justin D. Finke

On the acceleration of Ultra High Energy Cosmic Rays in Gamma Ray Bursts

UHECRs are roughly isotropic and attain very large energies, $E \gtrsim 3\times 10^{20} \; eV$. Conventional models fail to explain both facts. I show here that acceleration of UHECRs in GRBs satisfies both observational constraints. Using…

Astrophysics · Physics 2009-10-28 Mario Vietri

Observation of inverse Compton emission from a long $\gamma$-ray burst

Long-duration gamma-ray bursts (GRBs) originate from ultra-relativistic jets launched from the collapsing cores of dying massive stars. They are characterised by an initial phase of bright and highly variable radiation in the keV-MeV band…

High Energy Astrophysical Phenomena · Physics 2020-06-15 V. A. Acciari , S. Ansoldi , L. A. Antonelli , A. Arbet Engels , D. Baack , A. Babić , B. Banerjee , U. Barres de Almeida , J. A. Barrio , J. Becerra González , W. Bednarek , L. Bellizzi , E. Bernardini , A. Berti , J. Besenrieder , W. Bhattacharyya , C. Bigongiari , A. Biland , O. Blanch , G. Bonnoli , Ž. Bošnjak , G. Busetto , R. Carosi , G. Ceribella , Y. Chai , A. Chilingaryan , S. Cikota , S. M. Colak , U. Colin , E. Colombo , J. L. Contreras , J. Cortina , S. Covino , V. D'Elia , P. Da Vela , F. Dazzi , A. De Angelis , B. De Lotto , M. Delfino , J. Delgado , D. Depaoli , F. Di Pierro , L. Di Venere , E. Do Souto Espiñeira , D. Dominis Prester , A. Donini , D. Dorner , M. Doro , D. Elsaesser , V. Fallah Ramazani , A. Fattorini , G. Ferrara , D. Fidalgo , L. Foffano , M. V. Fonseca , L. Font , C. Fruck , S. Fukami , R. J. García López , M. Garczarczyk , S. Gasparyan , M. Gaug , N. Giglietto , F. Giordano , N. Godinović , D. Green , D. Guberman , D. Hadasch , A. Hahn , J. Herrera , J. Hoang , D. Hrupec , M. Hütten , T. Inada , S. Inoue , K. Ishio , Y. Iwamura , L. Jouvin , D. Kerszberg , H. Kubo , J. Kushida , A. Lamastra , D. Lelas , F. Leone , E. Lindfors , S. Lombardi , F. Longo , M. López , R. López-Coto , A. López-Oramas , S. Loporchio , B. Machado de Oliveira Fraga , C. Maggio , P. Majumdar , M. Makariev , M. Mallamaci , G. Maneva , M. Manganaro , K. Mannheim , L. Maraschi , M. Mariotti , M. Martínez , D. Mazin , S. Mićanović , D. Miceli , M. Minev , J. M. Miranda , R. Mirzoyan , E. Molina , A. Moralejo , D. Morcuende , V. Moreno , E. Moretti , P. Munar-Adrover , V. Neustroev , C. Nigro , K. Nilsson , D. Ninci , K. Nishijima , K. Noda , L. Nogués , S. Nozaki , S. Paiano , M. Palatiello , D. Paneque , R. Paoletti , J. M. Paredes , P. Peñil , M. Peresano , M. Persic , P. G. Prada Moroni , E. Prandini , I. Puljak , W. Rhode , M. Ribó , J. Rico , C. Righi , A. Rugliancich , L. Saha , N. Sahakyan , T. Saito , S. Sakurai , K. Satalecka , K. Schmidt , T. Schweizer , J. Sitarek , I. Šnidarić , D. Sobczynska , A. Somero , A. Stamerra , D. Strom , M. Strzys , Y. Suda , T. Surić , M. Takahashi , F. Tavecchio , P. Temnikov , T. Terzić , M. Teshima , N. Torres-Albà , L. Tosti , V. Vagelli , J. van Scherpenberg , G. Vanzo , M. Vazquez Acosta , C. F. Vigorito , V. Vitale , I. Vovk , M. Will , D. Zarić , L. Nava , P. Veres , P. N. Bhat , M. S. Briggs , W. H. Cleveland , R. Hamburg , C. M. Hui , B. Mailyan , R. D. Preece , O. Roberts , A. von Kienlin , C. A. Wilson-Hodge , D. Kocevski , M. Arimoto , D. Tak , K. Asano , M. Axelsson , G. Barbiellini , E. Bissaldi , F. Fana Dirirsa , R. Gill , J. Granot , J. McEnery , S. Razzaque , F. Piron , J. L. Racusin , D. J. Thompson , S. Campana , M. G. Bernardini , N. P. M. Kuin , M. H. Siegel , S. Bradley Cenko , P. O'Brien , M. Capalbi , A. D'Aì , M. De Pasquale , J. Gropp , N. Klingler , J. P. Osborne , M. Perri , R. Starling , G. Tagliaferri , A. Tohuvavohu , A. Ursi , M. Tavani , M. Cardillo , C. Casentini , G. Piano , Y. Evangelista , F. Verrecchia , C. Pittori , F. Lucarelli , A. Bulgarelli , N. Parmiggiani , G. E. Anderson , J. P. Anderson , G. Bernardi , J. Bolmer , M. D. Caballero-García , I. M. Carrasco , A. Castellón , N. Castro Segura , A. J. Castro-Tirado , S. V. Cherukuri , A. M. Cockeram , P. D'Avanzo , A. Di Dato , R. Diretse , R. P. Fender , E. Fernández-García , J. P. U. Fynbo , A. S. Fruchter , J. Greiner , M. Gromadzki , K. E. Heintz , I. Heywood , A. J. van der Horst , Y. -D. Hu , C. Inserra , L. Izzo , V. Jaiswal , P. Jakobsson , J. Japelj , E. Kankare , D. A. Kann , C. Kouveliotou , S. Klose , A. J. Levan , X. Y. Li , S. Lotti , K. Maguire , D. B. Malesani , I. Manulis , M. Marongiu , S. Martin , A. Melandri , M. Michałowski , J. C. A. Miller-Jones , K. Misra , A. Moin , K. P. Mooley , S. Nasri , M. Nicholl , A. Noschese , G. Novara , S. B. Pandey , E. Peretti , C. J. Pérez del Pulgar , M. A. Pérez-Torres , D. A. Perley , L. Piro , F. Ragosta , L. Resmi , R. Ricci , A. Rossi , R. Sánchez-Ramírez , J. Selsing , S. Schulze , S. J. Smartt , I. A. Smith , V. V. Sokolov , J. Stevens , N. R. Tanvir , C. C. Thóne , A. Tiengo , E. Tremou , E. Troja , A. de Ugarte Postigo , S. D. Vergani , M. Wieringa , P. A. Woudt , D. Xu , O. Yaron , D. R. Young

Constraining Sources of Ultra High Energy Cosmic Rays Using High Energy Observations with the Fermi Satellite

We analyze the conditions that enable acceleration of particles to ultra-high energies, ~10^{20} eV (UHECRs). We show that broad band photon data recently provided by WMAP, ISOCAM, Swift and Fermi satellites, yield constraints on the…

High Energy Astrophysical Phenomena · Physics 2015-06-03 Asaf Pe'er , Abraham Loeb

Very high energy gamma-ray emission beyond 10 TeV from GRB 221009A

The highest energy gamma-rays from gamma-ray bursts (GRBs) have important implications for their radiation mechanism. Here we report for the first time the detection of gamma-rays up to 13 TeV from the brightest GRB 221009A by the Large…

High Energy Astrophysical Phenomena · Physics 2023-11-27 Zhen Cao , F. Aharonian , Q. An , A. Axikegu , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , J. T. Cai , Q. Cao , W. Y. Cao , Zhe Cao , J. Chang , J. F. Chang , A. M. Chen , E. S. Chen , Liang Chen , Lin Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , Y. Chen , N. Cheng , Y. D. Cheng , M. Y. Cui , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , D. della Volpe , X. Q. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , J. Fang , K. Fang , C. F. Feng , L. Feng , S. H. Feng , X. T. Feng , Y. L. Feng , S. Gabici , B. Gao , C. D. Gao , L. Q. Gao , Q. Gao , W. Gao , W. K. Gao , M. M. Ge , L. S. Geng , G. Giacinti , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , Y. A. Han , H. H. He , H. N. He , J. Y. He , X. B. He , Y. He , M. Heller , Y. K. Hor , B. W. Hou , C. Hou , X. Hou , H. B. Hu , Q. Hu , S. C. Hu , D. H. Huang , T. Q. Huang , W. J. Huang , X. T. Huang , X. Y. Huang , Y. Huang , Z. C. Huang , X. L. Ji , H. Y. Jia , K. Jia , K. Jiang , X. W. Jiang , Z. J. Jiang , M. Jin , M. M. Kang , T. Ke , D. Kuleshov , K. Kurinov , B. B. Li , Cheng Li , Cong Li , D. Li , F. Li , H. B. Li , H. C. Li , H. Y. Li , J. Li , Jian Li , Jie Li , K. Li , W. L. Li , W. L. Li , X. R. Li , Xin Li , Y. Z. Li , Zhe Li , Zhuo Li , E. W. Liang , Y. F. Liang , S. J. Lin , B. Liu , C. Liu , D. Liu , H. Liu , H. D. Liu , J. Liu , J. L. Liu , J. Y. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , Y. Liu , Y. N. Liu , R. Lu , Q. Luo , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , J. R. Mao , Z. Min , W. Mitthumsiri , H. J. Mu , Y. C. Nan , A. Neronov , Z. W. Ou , B. Y. Pang , P. Pattarakijwanich , Z. Y. Pei , M. Y. Qi , Y. Q. Qi , B. Q. Qiao , J. J. Qin , D. Ruffolo , A. Sáiz , D. Semikoz , C. Y. Shao , L. Shao , O. Shchegolev , X. D. Sheng , F. W. Shu , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , Q. N. Sun , X. N. Sun , Z. B. Sun , P. H. T. Tam , Q. W. Tang , Z. B. Tang , W. W. Tian , C. Wang , C. B. Wang , G. W. Wang , H. G. Wang , H. H. Wang , J. C. Wang , K. Wang , L. P. Wang , L. Y. Wang , P. H. Wang , R. Wang , W. Wang , X. G. Wang , X. Y. Wang , Y. Wang , Y. D. Wang , Y. J. Wang , Z. H. Wang , Z. X. Wang , Zhen Wang , Zheng Wang , D. M. Wei , J. J. Wei , Y. J. Wei , T. Wen , C. Y. Wu , H. R. Wu , S. Wu , X. F. Wu , Y. S. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , G. G. Xin , Y. L. Xin , Y. Xing , Z. Xiong , D. L. Xu , R. F. Xu , R. X. Xu , W. L. Xu , L. Xue , D. H. Yan , J. Z. Yan , T. Yan , C. W. Yang , F. Yang , F. F. Yang , H. W. Yang , J. Y. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , S. B. Yang , Y. H. Yao , Z. G. Yao , Y. M. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Y. H. Yu , Q. Yuan , H. Yue , H. D. Zeng , T. X. Zeng , W. Zeng , M. Zha , B. B. Zhang , F. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , L. X. Zhang , Li Zhang , P. F. Zhang , P. P. Zhang , R. Zhang , S. B. Zhang , S. R. Zhang , S. S. Zhang , X. Zhang , X. P. Zhang , Y. F. Zhang , Yi Zhang , Yong Zhang , B. Zhao , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , F. Zheng , B. Zhou , H. Zhou , J. N. Zhou , M. Zhou , P. Zhou , R. Zhou , X. X. Zhou , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , X. Zuo

Physical parameters and emission mechanism in Gamma-Ray Bursts

Detailed information on the physical parameters in the sources of cosmological Gamma-Ray Bursts (GRBs) is obtained from few plausible assumptions consistent with observations. Model-independent requirements posed by these assumptions on the…

Astrophysics · Physics 2009-10-31 E. V. Derishev , V. V. Kocharovsky , Vl. V. Kocharovsky

The High Energy Budget Allocations in Shocks and GRB

The statistical distribution of energies among particles responsible for long Gamma Ray Burst (GRB) emission is analyzed in light of recent results of the Fermi Observatory. The allsky flux, $F_{\gamma}$, recorded by the Gamma Ray Burst…

High Energy Astrophysical Phenomena · Physics 2011-01-27 David Eichler , Dafne Guetta , Martin Pohl

Probing the environments surrounding ultrahigh energy cosmic ray accelerators and their implications for astrophysical neutrinos

We explore inferences on ultrahigh energy cosmic ray (UHECR) source environments -- constrained by the spectrum and composition of UHECRs and non-observation of extremely high energy neutrinos -- and their implications for the observed high…

High Energy Astrophysical Phenomena · Physics 2021-12-24 Marco Stein Muzio , Glennys R. Farrar , Michael Unger

Multi-messenger constraints on transient accelerators of ultra-high energy cosmic rays

The origin of ultra-high-energy cosmic rays (UHECRs) remains an open questions in astrophysics. We explore two primary scenarios for the distribution of UHECR sources, assuming that their production rate follows either the cosmic…

High Energy Astrophysical Phenomena · Physics 2025-10-29 Antonio Condorelli , Jonathan Biteau , Olivier Deligny , Remi Adam

GRB 080916C: on the radiation origin of the prompt emission from KeV/MeV to GeV

Fermi observations of high-energy gamma-ray emission from GRB 080916C shows that its spectrum is consistent with the Band function from MeV to tens of GeV. Assuming one single emission mechanism dominates in the whole energy range, we show…

High Energy Astrophysical Phenomena · Physics 2011-02-11 Xiang-Yu Wang , Zhuo Li , Zi-Gao Dai , Peter Meszaros

Insights into the properties of GRBs with TeV emission

This study investigates the environments and characteristics of Gamma-Ray Bursts (GRBs) exhibiting very high energy (VHE) emission. Recent detections of VHE emission, up to TeV energies, challenge synchrotron-only emission models and…

High Energy Astrophysical Phenomena · Physics 2023-09-25 Kuntal Misra , Dimple , Ankur Ghosh

Dissecting the radiation mechanism of short GRB~160821B through multi-wavelength modelling

GRB~160821B is the only short GRB detected to date at very high energy (VHE, $\gtrsim 100$ GeV). At a redshift $z=0.161$, it was detected by MAGIC telescopes approximately four hours since the trigger. VHE dataset was complied with the…

High Energy Astrophysical Phenomena · Physics 2025-10-02 Ankur Ghosh , Monica Barnard , Jagdish C. Joshi , Soebur Razzaque

GRB 221009A: A light dark matter burst or an extremely bright Inverse Compton component?

Gamma-ray bursts (GRBs) have been considered as potential very high-energy photon emitters due to the large amount of energy released as well as the strong magnetic fields involved in their jets. However, the detection of TeV photons is not…

High Energy Astrophysical Phenomena · Physics 2023-03-01 M. M. González , D. Avila Rojas , A. Pratts , S Hernández-Cadena , N. Fraija , R. Alfaro , Y. Pérez Araujo , J. A. Montes

High-Energy Emission Induced by Ultra-High-Energy Photons as a Probe of Ultra-High-Energy Cosmic-Ray Accelerators Embedded in the Cosmic Web

The photomeson production in ultra-high-energy cosmic-ray (UHECR) accelerators such as gamma-ray bursts and active galaxies may lead to ultra-high-energy (UHE) gamma-ray emission. We show that generation of UHE pairs in magnetized…

High Energy Astrophysical Phenomena · Physics 2012-01-10 Kohta Murase