Modeling a Kolmogorov-Type Magnetic Field in the Galaxy and its Effect on an Extragalactic Isotropic Flux of Ultra High Energy Cosmic Rays

5th International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Davoudifar, Pantea^1

Research Institute for Astronomy and Astrophysics of Maragha (RIAAM)- Maragha, P.O.Box: 441-55134, Iran^1

关键词: Galactic halo;    Galactic magnetic fields;    Intergalactic space;    Kolmogorov;    Random components;    Ultra high-energy cosmic rays;    Ultra-high energies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/738/1/012035/pdf
DOI  :  10.1088/1742-6596/738/1/012035

来源: IOP

【 摘 要 】

A model of turbulent galactic magnetic fields was developed in which, the type of turbulence were considered to be Kolmogorov. We tested the effect of this model on an isotropically distributed flux of ultra high energy cosmic ray in the extragalactic space. To do this, a giant Galactic halo (radius of ∼ 100Mpc) was considered. Regular and random components of the Galactic Magnetic Fields were considered to have the mean observed relevant values and also satisfy a Kolmogorov field type. The deviation from isotropy then were calculated considering the propagation of ultra high energy protons in such a magnetic field and results were discussed to show how isotropic is the flux of ultra high energy cosmic rays in the extragalactic space. It is seen that considering an isotropic flux of ultra high energy cosmic rays in the intergalactic space for different choices of galactic magnetic field is not consistence with the distribution of observed ultra high energy events.