2025/02/05 by Giorgio Galanti, Galanti, Giorgio, M. Roncadelli +7 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph)
paper · pdf · doi:10.48550/arxiv.2502.03453
openalex publication_date 2025/02/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The brightest ever observed gamma ray burst GRB 221009A at redshift z = 0.151 was detected on October 9, 2022. Its highest energy photons have been recorded by the LHAASO collaboration up to above 12 \rm TeV, and one of the at \cal E = 251 \rm TeV by the Carpet-2 collaboration. Very recently, the Carpet-3 collaboration has completed the data analysis, showing that the evidence of the 251 \rm TeV photon is quite robust. Still, according to conventional physics photons with \cal E \gtrsim 10 \rm TeV cannot be observed owing to the absorption by the extragalactic background light (EBL). Previously it has been demonstrated that an axion-like particle (ALP) with allowed parameters ensures the observability of the LHAASO photons. Here we show that the Lorentz invariance violation allows the \cal E = 251 \rm TeV (now around 300 TeV) Carpet photon to be detected.