Parameterization of Spectra and Angular Distribution Produced by p-p Interactions in Astronomical Environments

Details Parameterization of Spectra and Angular Distribution Produced by p-p Interactions in Astronomical Environments Parameterization of Spectra and Angular Distribution Produced by p-p Interactions in Astronomical Environments

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.0102k&link_type=abstract

American Astronomical Society, HEAD meeting #9, #1.02; Bulletin of the American Astronomical Society, Vol. 38, p.329

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We present here the spectra of stable secondary particles (gamma-rays, electrons, positrons and neutrinos) and the angular distribution of gamma-rays produced by p-p interactions for astronomical applications. The spectra and angular distribution are presented in parameterized formulae. The underlying p-p interaction model is that of Kamae et al. (2005) which incorporates a logarithmically rising inelastic p-p cross section, the diffraction dissociation process and the Feynman scaling violation. The model incorporates the contribution from two baryon resonance states, the Delta(1232) and a representation of multiple resonances with masses around 1600 MeV/c2, to improve fidelity with experimental data near the pion production threshold. The spectra and angular distribution combined provides a generic model for predicting gamma-ray fluxes from anisotropic relativistic outflows/jets (including protons) generated in objects such as supernova remnants (SNR), AGNs and gamma-ray bursts (GRB).

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