Effect of random nature of cosmic ray sources – Supernova remnants – on cosmic ray intensity fluctuations,anisotropy, and electron energy spectrum |
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| Institution: | 1. Institute for Terrestrial Magnetism, Ionosphere and Radiowave Propagation, Laboratory for Astrophysical Research, IZMIRAN, 142190 Troitsk, Moscow Region, Russian Federation;2. Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USA;3. Laboratory for High Energy Astrophysics, Code 661, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA |
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| Abstract: | The random nature of sources (the supernova remnants) leads to the fluctuations of cosmic ray intensity in space and time. We calculate the expected fluctuations in a flat-halo diffusion model for particles with energies from 0.1 to 103 TeV. The data on energy spectra and anisotropy of very high energy protons, nuclei and electrons, and the astronomical data on supernova remnants, the potential sources of cosmic rays, are used to constrain the value of the cosmic-ray diffusion coefficient and its dependence on energy. |
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