高能暂现源 · 每日文献综述

The exceptionally bright gamma-ray burst GRB 221009A, detected up to multi-TeV energies by the LHAASO observatory, provides a unique opportunity to probe possible deviations from standard photon propagation at extreme energies. In particular, it allows to test quadratic subluminal Lorentz Invariance Violation (LIV) scenarios through a potential enhancement of the observed flux at the highest energies. We argue that excesses in the GRB 221009A data currently classified as non-detections at energies E ≳ 30 TeV warrant further investigation, as they may indicate a recovery of the observable spectrum consistent with the LIV-induced suppression of <mml:math><mml:mrow><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi><mml:mo>→</mml:mo><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:mrow></mml:math> interactions during propagation. The absence of such a signature would allow one to exclude previously unexplored regions of the parameter space associated with the energy scale of new physics.