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Communication Dans Un Congrès Année : 2021

The gamma-ray signal from type IIP core-collapse supernovae

Résumé

The shock wave resulting from the core-collapse of a massive star can accelerate particles up to PeV energies in the first few days to weeks after the explosion. This can lead to the production of a potentially detectable gamma-ray signal. The gamma-ray flux however is strongly affected by the two photon-annihilation process, where gamma-ray photons interact with photons from the SN photosphere. This process hampers the detection of gamma-rays from core-collapse supernovae at very high energies. In order to probe the detectability of the gamma-rays with current and upcoming gamma-ray facilities, we estimate the gamma-ray flux from typical type IIP core collapse supernovae (CCSNe). These are the most common type of supernovae, and are presumed to arise from red supergiant progenitors. We include a detailed time-dependent calculation of two-photon absorption. Our results will be very useful in creating a strategic observing program to detect CCSNe with the next generation gamma-ray observatory, such as the Cherenkov Telescope Array (CTA).
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Dates et versions

hal-03373269 , version 1 (22-11-2022)

Identifiants

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Pierre Cristofari, Matthieu Renaud, Alexandre Marcowith, Vincent Tatischeff, Vikram Dwarkadas. The gamma-ray signal from type IIP core-collapse supernovae. 37th International Cosmic Ray Conference, Jul 2021, Berlin, Germany. pp.926, ⟨10.22323/1.395.0926⟩. ⟨hal-03373269⟩
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