Lorentz invariance violation induced threshold anomaly versus very-high energy cosmic photon emission from GRB 221009A

It has been reported that the Large High Altitude Air Shower Observatory (LHAASO) observed very high energy photons from GRB 221009A, with the highest energy reaching 18 TeV. We find that observation of such high energy photons is quite nontrivial since extragalactic background light could absorb th...

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Bibliographic Details
Published inAstroparticle physics Vol. 148; p. 102831
Main Authors Li, Hao, Ma, Bo-Qiang
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2023
Subjects
Gamma-ray burst
Lorentz invariance violation
Threshold anomaly
Very high energy photons
Very high energy photons
Gamma-ray burst
Threshold anomaly
Lorentz invariance violation
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Summary:It has been reported that the Large High Altitude Air Shower Observatory (LHAASO) observed very high energy photons from GRB 221009A, with the highest energy reaching 18 TeV. We find that observation of such high energy photons is quite nontrivial since extragalactic background light could absorb these photons severely and the flux is too weak to be observed. Therefore we discuss a potential mechanism for us to observe these photons, and suggest that Lorentz invariance violation induced threshold anomaly of the process γγ→e−e+ provides a candidate to explain this phenomenon.
ISSN:0927-6505
1873-2852
DOI:10.1016/j.astropartphys.2023.102831