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Paper: Photon Production in Cascade Initiated by Relativistic Protons
Volume: 312, Third Rome Workshop on Gamma-Ray Bursts in the Afterglow Era
Page: 403
Authors: Asano, K.; Takahara, F.
Abstract: We investigate the consequences of proton acceleration in the residual thermal photon field fo the fireball wind. We show that the residue of the radiation field in the fireball can ignite the photopion production and subsequent cascade. We find that Fermi accelerated protons efficiently bring their energy into pion production and subsequent photon emission. The particles cascading from the pions emit photons in a wide energy range. The downscattering of photons or mild Comptonization by cold thermal pairs are possible processes to explain the observed break in GRB spectra.
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