Gamma Ray Burst GRB 221009A: two distinct hints at once at new physics
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913679627255808 |
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| author | Galanti, Giorgio Roncadelli, Marco Bonnoli, Giacomo Nava, Lara Tavecchio, Fabrizio |
| author_facet | Galanti, Giorgio Roncadelli, Marco Bonnoli, Giacomo Nava, Lara Tavecchio, Fabrizio |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_03453 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Gamma Ray Burst GRB 221009A: two distinct hints at once at new physics Galanti, Giorgio Roncadelli, Marco Bonnoli, Giacomo Nava, Lara Tavecchio, Fabrizio High Energy Astrophysical Phenomena High Energy Physics - Phenomenology 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. |
| title | Gamma Ray Burst GRB 221009A: two distinct hints at once at new physics |
| topic | High Energy Astrophysical Phenomena High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.03453 |