Transport in Astrophysics: VII. Solar Modulation of the Cosmic Rays  

作　　者：Lorenzo Zaninetti Lorenzo Zaninetti(Department of Physics, University of Turin, Turin, Italy)

机构地区：[1]Department of Physics, University of Turin, Turin, Italy

出　　处：《International Journal of Astronomy and Astrophysics》2024年第4期245-258,共14页天文学与天体物理学国际期刊(英文)

摘　　要：Two existing solutions for the diffusion of cosmic rays (CRs) are analyzed. The first one is a well-known solution in 3D over an infinite spatial domain and the second one is a 1D solution with an exponential decay initial profile over an infinite spatial domain. For each solution, the temporal evolution of the number of particles at a fixed distance has been analyzed. The anticorrelation between the flux of CRs and the magnetic field at one astronomical unit has been explained by adopting a careful choice of the astrophysical parameters involved.Two existing solutions for the diffusion of cosmic rays (CRs) are analyzed. The first one is a well-known solution in 3D over an infinite spatial domain and the second one is a 1D solution with an exponential decay initial profile over an infinite spatial domain. For each solution, the temporal evolution of the number of particles at a fixed distance has been analyzed. The anticorrelation between the flux of CRs and the magnetic field at one astronomical unit has been explained by adopting a careful choice of the astrophysical parameters involved.

关 键 词：Cosmic Rays Particle Diffusion Random Walks 

分 类 号：O17[理学—数学]