Two-component concept for ground level enhancements of solar cosmic rays: Solar and interplanetary aspects

We discuss solar and interplanetary aspects concerning the observations and interpretation of two relativistic components of solar cosmic rays (SCRs), namely, impulsive (prompt) and slow (delayed) components (PC and DC, respectively). The prompt component is characterized by the strong anisotropy an...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2009-03, Vol.73 (3), p.297-300
Main Authors: Miroshnichenko, L. I., Vashenyuk, E. V., Perez-Peraza, J.
Format: Article
Language:English
Subjects:
Cosmic rays
Ground level
Hadrons
Heavy Ions
Nuclear Physics
Physics
Physics and Astronomy
Proceedings of the XXX All-Russia Conference on Cosmic Rays
Solar atmosphere
Solar cosmic rays
Solar generators
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Summary:We discuss solar and interplanetary aspects concerning the observations and interpretation of two relativistic components of solar cosmic rays (SCRs), namely, impulsive (prompt) and slow (delayed) components (PC and DC, respectively). The prompt component is characterized by the strong anisotropy and exponential energy spectrum. The delayed component is essentially isotropic and has a power-law energy spectrum. Our analysis of observational data and theoretical arguments rules out the interplanetary propagation as the origin for these two components. Most likely, they are formed in the SCR generation on the Sun within the framework of two-source model with multiple acceleration processes in the solar atmosphere.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873809030046