منابع مشابه
Models for Galactic Cosmic-ray Propagation
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 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 کاملNew constraints on Galactic cosmic - ray propagation
An extensive program for the calculation of galactic cosmic-ray propagation has been developed. Primary and secondary nucleons, primary and secondary electrons, secondary positrons and antiprotons are included. Fragmentation and energy losses are computed using realistic distributions for the interstellar gas and radiation fields. Models with diffusion and convection only do not account natural...
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 کاملGalactic cosmic ray propagation: self-consistent models for nuclei, electrons and gamma rays
We describe a numerical approach to modelling the diffusive propagation of cosmic-ray nuclei and electrons in the Galaxy. Our main motivation is the interpretation of diffuse Galactic -ray emission. The model addresses both the spatial and energy dependence of the cosmic-ray distribution, uses the observed distributionof interstellar gas and radiation fields, and serves as the basis for predict...
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ژورنال
عنوان ژورنال: Advances in Space Research
سال: 2001
ISSN: 0273-1177
DOI: 10.1016/s0273-1177(01)00112-0