منابع مشابه
Time Delays in Cosmic Ray Propagation
Cosmic Rays (CR) travel at speeds essentially indistinguishable from the speed of light. However whilst travelling through magnetic fields, both regular and turbulent, they are delayed behind the light since they are usually charged particles and their paths are not linear. Those delays can be so long that they are an impediment to correctly identifying sources which may be variable in time. Fu...
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A new numerical model of particle propagation in the Galaxy has been developed, which allows the study of cosmic-ray and gamma-ray production and propagation in 2D or 3D, including a full reaction network. This is a further development of the code which has been used for studies of cosmic ray reacceleration, Galactic halo size, antiprotons and positrons in cosmic rays, the interpretation of dif...
متن کاملNumerical Models for Cosmic Ray Propagation and Gamma Ray Production
An extensive program for the calculation of galactic cosmic-ray propagation has been developed. Primary and secondary nucleons, primary and secondary electrons, and secondary positrons are included. The basic spatial propagation mechanisms are (momentum-dependent) diffusion, convection, while in momentum space energy loss and diffusive reacceleration are treated. Fragmentation and energy losses...
متن کاملtime delays in cosmic ray propagation
cosmic rays (cr) travel at speeds essentially indistinguishable from the speed of light. however whilst travelling through magnetic fields, both regular and turbulent, they are delayed behind the light since they are usually charged particles and their paths are not linear. those delays can be so long that they are an impediment to correctly identifying sources which may be variable in time. fu...
متن کاملCosmic Ray Spectra in Nambu-Goldstone Dark Matter Models
Masahiro Ibe, Hitoshi Murayama, 3 Satoshi Shirai, 3 and Tsutomu T. Yanagida 4 SLAC National Accelerator Laboratory, Menlo Park, CA 94025 Department of Physics, University of California, Berkeley, and Theoretical Physics Group, LBNL, Berkeley, CA 94720 Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa 277-8568, Japan. Department of Physics, University of Tok...
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ژورنال
عنوان ژورنال: Progress in Particle and Nuclear Physics
سال: 2019
ISSN: 0146-6410
DOI: 10.1016/j.ppnp.2019.07.002