Explaining TeV cosmic-ray anisotropies with non-diffusive cosmic-ray propagation [electronic resource]
Astroparticle Physics; Cosmic Rays; Ism: Kinematics And Dynamics; Magnetic Fields; Turbulence.
Saved in:
| Online Access: |
Online Access (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2016.
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| Subjects: |
| Summary: | Astroparticle Physics; Cosmic Rays; Ism: Kinematics And Dynamics; Magnetic Fields; Turbulence. |
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| Abstract: | Constraining the behavior of cosmic ray data observed at Earth requires a precise understanding of how the cosmic rays propagate in the interstellar medium. The interstellar medium is not homogeneous; although turbulent magnetic fields dominate over large scales, small coherent regions of magnetic field exist on scales relevant to particle propagation in the nearby Galaxy. Guided propagation through a coherent field is significantly different from random particle diffusion and could be the explanation of spatial anisotropies in the observed cosmic rays. We present a Monte Carlo code to propagate cosmic particle through realistic magnetic field structures. We discuss the details of the model as well as some preliminary studies which indicate that coherent magnetic structures are important effects in local cosmic-ray propagation, increasing the flux of cosmic rays by over two orders of magnitude at anisotropic locations on the sky. Furthermore, the features induced by coherent magnetic structure could be the cause of the observed TeV cosmic-ray anisotropy. |
| Item Description: | Published through SciTech Connect. 05/11/2016. "la-ur--15-27838" The Astrophysical Journal (Online) 822 2 ISSN 1538-4357 AM. James Patrick Harding; Chris Lee Fryer; Susan Marie Mendel. |
| Physical Description: | Article No. 102 : digital, PDF file. |