The contribution of nearby supernova remnants on the cosmic ray flux at Earth
arXiv:2001.07602 · doi:10.1093/mnras/staa171
Abstract
We consider anisotropic diffusion of Galactic cosmic rays in the Galactic magnetic field, using the Jansson-Farrar model for the field. In this paper we investigate the influence of source position on the cosmic ray flux at Earth in two ways: [1] by considering the contribution from cosmic ray sources located in different intervals in Galacto-centric radius, and [2] by considering the contribution from a number of specific and individual close-by supernova remnants. Our calculation is performed by using a fully three-dimensional stochastic method. This method is based on the numerical solution of a set of stochastic differential equations, equivalent to Ito formulation, that describes the propagation of the Galactic cosmic rays.
References in corpus (5)
- Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment
- Measurement of boron and carbon fluxes in cosmic rays with the PAMELA experiment
- Power requirements for cosmic ray propagation models involving diffusive reacceleration; estimates and implications for the damping of interstellar turbulence
- Effect of nearby supernova remnants on local Cosmic-Rays
- Cosmic-Ray proton spectrum below 100 TeV in the local region