Deciphering the ∼18 TeV Photons from GRB 221009A

Author:

Sahu SariraORCID,Medina-Carrillo B.,Sánchez-Colón G.ORCID,Rajpoot SubhashORCID

Abstract

Abstract On 2022 October 9, an extremely powerful gamma-ray burst, GRB 221009A, was detected by several instruments. Despite being obstructed by the Milky Way galaxy, its afterglow outburst outshone all other GRBs seen before. LHAASO detected several thousand very high energy photons extending up to 18 TeV. Detection of such energetic photons is unexpected due to the large opacity of the universe. It is possible that in the afterglow epoch, the intrinsic very high energy photon flux from the source might have increased manifolds, which could compensate for the attenuation by pair production with the extragalactic background light. We propose such a scenario and show that very high energy photons can be observed on the Earth from the interaction of very high energy protons with the seed synchrotron photons in the external forward shock region of the GRB jet.

Publisher

American Astronomical Society

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 13 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. TeV afterglow from GRB 221009A: photohadronic origin?;Monthly Notices of the Royal Astronomical Society: Letters;2024-06-14

2. A Photohadronic Interpretation of H.E.S.S. Afterglow Observations of GRB 221009A;The Astrophysical Journal;2024-01-30

3. Astrophysical and Cosmological Searches for Lorentz Invariance Violation;Springer Series in Astrophysics and Cosmology;2024

4. Prospects for Detecting γ-Ray Bursts at Very High Energies with the HADAR Experiment;The Astrophysical Journal;2023-11-01

5. Multipoint Detection of GRB221009A’s Propagation through the Heliosphere;The Astrophysical Journal Letters;2023-10-01

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