IPM Calendar 
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Events for day: Tuesday 15 August 2023    
           14:00 - 15:00     Weekly Seminar
HEPCo Group
Neutrinos from GRB 221009A: producing ALPs and explaining LHAASO anomalous gamma event.

School
PHYSICS

Date and time

Tuesday, 15th of August 2023 (24th of Mordad, 1402), 2:00 pm (Tehran zone)



Link

https://www.skyroom.online/ch/schoolofphysics/highenergyseminar



Abstract
We propose a novel explanation for the 18 TeV gamma ray from GRB 221009A observed by LHAASO. High-energy neutrinos are converted into axion-like particles (ALPs) via their interaction with the cosmic neutrino background. Subsequently, ALPs are converted into high-energy photons in the magnetic field of our galaxy. We compute the fluxes of neutrinos, ALPs, and photons reaching Ear ...