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The low limit of the number of individual sources giving the main contribution to the CR flux around the kneeстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
- Автор: Sveshnikova L.G.
- Сборник: Proceedings of the 29th International Cosmic Ray Conference, August 03-10, 2005, Pune, INDIA
- Том: 3
- Год издания: 2005
- Место издания: Tata Institut Fundamental Research Pune , India
- Первая страница: 145
- Последняя страница: 148
- DOI: 100037
- Аннотация: We check the hypothesis whether only a small class of peculiar Supernovae gives the main contribution to the flux of cosmic rays (CR) in the knee region. As compared with previous work, where CR flux averaged over Supernova (SN) explosion energy, type and conditions around the explosion was calculated, the effects of CR propagation were included in calculations. Besides, new formulae for the maximal energy of accelerated particles in one SN remnant (SNP,) were used. It is shown that the idea, that only small fraction of SNRs provides the main contribution to the cosmic ray flux around PeV region obviously contradicts to a smooth character of the observed CR spectrum and to the measured anisotropy due to large fluctuations of individual SNR contribution. But in frames of the applied simplified approach even in the case, when all SNRs can accelerate CR particles up to the knee energy the calculated value of < A(2)>(1/2) more or less agrees with the experimentally measured anisotropy (at E > 100 TeV) only if the chemical composition becomes heavier around the knee region, that compensates the D(E) increase, and nearby SNRS With R-SNR < 700 pc for some reason do not contribute to CR flux. But it looks preferentially to suggest that the number of sources providing the knee region is larger than the number of SNRs.
- Добавил в систему: Свешникова Любовь Георгиевна