SECRET, a MADE-based conditional density emulator, reproduces and interpolates the joint distribution of stochastic cosmic-ray electron spectra across five transport parameters with few-percent quantile accuracy over most of its range.
On cosmic ray acceleration in supernova remnants and the FERMI/PAMELA data
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abstract
We discuss recent observations of high energy cosmic ray positrons and electrons in the context of hadronic interactions in supernova remnants, the suspected accelerators of galactic cosmic rays. Diffusive shock acceleration can harden the energy spectrum of secondary positrons relative to that of the primary protons (and electrons) and thus explain the rise in the positron fraction observed by PAMELA above 10 GeV. We normalize the hadronic interaction rate by holding pion decay to be responsible for the gamma-rays detected by HESS from some SNRs. By simulating the spatial and temporal distribution of SNRs in the Galaxy according to their known statistics, we are able to then fit the electron (plus positron) energy spectrum measured by Fermi. It appears that IceCube has good prospects for detecting the hadronic neutrino fluxes expected from nearby SNRs.
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SECRET: Stochasticity Emulator for Cosmic Ray Electrons
SECRET, a MADE-based conditional density emulator, reproduces and interpolates the joint distribution of stochastic cosmic-ray electron spectra across five transport parameters with few-percent quantile accuracy over most of its range.