Reassessing the contribution of long-GRB high-energy afterglows to the isotropic gamma-ray background after GRB 221009A

arXiv:2608.28448 · astro-ph.HE · Submitted 2026-08-28 · Read on arXiv

astro-ph.HE

Submitted: 2026-08-28

Updated: 2026-10-02

Terminology

• Calibration — 8× in this paper · explained in 7 episodes
• Consistency — 4× in this paper · explained in 3 episodes
• Benchmark — 3× in this paper · explained in 2 episodes
• Core — 2× in this paper · explained in 2 episodes
• Fermi Large Area Telescope — 2× in this paper
• Accuracy — 1× in this paper · explained in 1 episode
• Energetic Gamma Ray Experiment Telescope — 1× in this paper
• Fermi Gamma-ray Burst Monitor — 1× in this paper
• Generative AI — 1× in this paper · explained in 2 episodes
• Large High Altitude Air Shower Observatory — 1× in this paper
• Major Atmospheric Gamma Imaging Cherenkov — 1× in this paper
• Population Synthesis — 1× in this paper · explained in 2 episodes
• Regularization — 1× in this paper · explained in 3 episodes

Sources

• Searches for Neutrinos from Gamma-Ray Bursts using the IceCube Neutrino Observatory
• Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow
• Teraelectronvolt emission from the $\gamma$-ray burst GRB 190114C
• The second H.E.S.S. gamma-ray burst catalogue: 15 years of observations with the H.E.S.S. telescopes
• Planck 2018 results. VI. Cosmological parameters
• A decade of Gamma-Ray Bursts observed by $Fermi$-LAT: The 2$^{nd}$ GRB catalog
• CRPropa 3.2 -- an advanced framework for high-energy particle propagation in extragalactic and galactic spaces
• High energy electromagnetic cascades in extragalactic space: physics and features
• A tera-electronvolt afterglow from a narrow jet in an extremely bright gamma-ray burst 221009A
• Very high energy gamma-ray emission beyond 10 TeV from GRB 221009A
• $\gamma$-Cascade V4: A Semi-Analytical Code for Modeling Cosmological Gamma-Ray Propagation
• Carpet-3 detection of a photon-like air shower with estimated primary energy above 100 TeV in a spatial and temporal coincidence with GRB 221009A
• Modeling the Extragalactic Background Light and the Cosmic Star Formation History
• Production and propagation of ultra-high energy photons using CRPropa 3
• Gamma-Ray Burst Science in the Era of the Cherenkov Telescope Array
• EGRET Observations of the Extragalactic Gamma Ray Emission
• A new determination of the extragalactic diffuse gamma-ray background from EGRET data

Related papers

• Numerical Studies of Accretion Flows onto a Neutron Star Engulfed in a Massive Star
• Collisionless Accretion of Finite-Angular-Momentum Plasma onto a Spinning Black Hole
• Impact of Magnetic Field Topology on Electromagnetic and Gravitational Waves from Binary Neutron Star Merger Remnants
• XRISM Resolve Spectroscopy of GX 5-1: Constraints on Iron Spectral Features in a Luminous Neutron-Star Binary
• SN 1006: A Cosmic Laboratory for Investigating Shock Acceleration Physics
• Neutrino Spectral Pinching in 3D Core-Collapse Supernovae: Late-Time Convergence, Failed-Explosion Signatures, and Viewing-Angle Dispersion