Photon Production In Cascade Initiated By Relativistic Protons

Details Photon Production In Cascade Initiated By Relativistic Protons Photon Production In Cascade Initiated By Relativistic Protons

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..312..403a&link_type=abstract

Third Rome Workshop on Gamma-Ray Bursts in the Afterglow Era ASP Conference Series, Volume 312, Proceedings of the conference he

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate the consequences of proton acceleration in the residual thermal photon field of 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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