A Possible Hadronic Origin of TeV Photon Emission from SNR G106.3+2.7
2021
A possible model is developed to explain the multi-band emission from a "PeVatron" SNR G106.3+2.7. In the model, the acceleration and propagation of particles from the Bohm-like diffusion region inside the SNR to the Galactic diffusion region outside the SNR are described through non-linear diffusive shock acceleration (NLDSA). Our results show that (i) the photon emission from radio to X-ray bands is dominated by the synchrotron radiation of the electrons accelerated inside the SNR; and (ii) the photons with energy of $\gtrsim$ GeV are mainly produced by the protons inside and outside the SNR, moreover, the photons in the energy range of $\sim$ 1 - $\sim$ 100 TeV are due to the interaction of escaped protons with a dense molecular clouds (MC).
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