Hostname: page-component-8448b6f56d-m8qmq Total loading time: 0 Render date: 2024-04-25T03:47:17.525Z Has data issue: false hasContentIssue false
  • English
  • Français

Cosmic ray spectra in planetary atmospheres

Published online by Cambridge University Press:  01 September 2008

M. Buchvarova  and
P. Velinov
M. Buchvarova
Affiliation:
Space Research Institute, Bulgarian Academy of Sciences, 6 Moskovska Str., Sofia 1000, Bulgaria email: marusjab@yahoo.com
P. Velinov
Affiliation:
Solar-Terrestrial Influences Laboratory, Bulgarian Academy of SciencesAcad. G. Bonchev, bl.3, Sofia 1113, Bulgaria
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Our model generalizes the differential D(E) and integral D(>E) spectra of cosmic rays (CR) during the 11-year solar cycle. The empirical model takes into account galactic (GCR) and anomalous cosmic rays (ACR) heliospheric modulation by four coefficients. The calculated integral spectra in the outer planets are on the basis of mean gradients: for GCR – 3%/AU and 7%/AU for anomalous protons. The obtained integral proton spectra are compared with experimental data, the CRÈME96 model for the Earth and theoretical results of 2D stochastic model. The proposed analytical model gives practical possibility for investigation of experimental data from measurements of galactic cosmic rays and their anomalous component.

Keywords

Cosmic ray spectramodellingplanet atmospheres
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S257: Universal Heliophysical Processes , September 2008 , pp. 471 - 473
Copyright
Copyright © International Astronomical Union 2009

References

Bobik, P. et al. 2006, in: Proc. of 20 ECRS, (Lisbon, Portugal)Google Scholar
Buchvarova, M. 2006, PhD Thesis, SofiaGoogle Scholar
Christian, E. et al. 1999, in: Dingus, B. L., Kieda, D. B., & Salamon, M. H. (eds.), Proc. of 26 ICRC., Salt Lake City, Utah (USA, New York: American Institute of Physics Press)Google Scholar
CREME96, Cosmic ray ion differential and integral spectra. Available from: http://tec-ees.esa.int/ProjectSupport/ISO/CREME96.html.Google Scholar
Dorman, L. I. 1977, in: Proc. of 15 ICRC, (Sofia: Bulg. Acad. Sci. Publ. House), p. 405Google Scholar
Fuji, Z. & McDonald, F. B. 1997, J. Geophys. Res., 102, 24201CrossRefGoogle Scholar
Heber, B. et al. 1995, Space Sci. Rev., 72, 391CrossRefGoogle Scholar
Hillas, A. M. 1972, Cosmic Rays (Oxford; Pergamon Press)Google Scholar
McKibben, R. B, Pyle, K. R., & Simpson, J. A. 1979, ApJ. (Letters), 227, L147CrossRefGoogle Scholar
Velinov, P. I. Y. 2000, Compt. Rend. Acad. Bulg. Sci., 53, 37.Google Scholar
Press, W. H., Flannery, B. P., Teukolsky, S. A., & Vetterling, W. T. 1991, Numerical Recipes in C – the Art of Scientific Computing (Cambridge University Press)Google Scholar
Schopper, E. 1967, in: Sitte, K. (ed.), Encyclopedia of Physica, v. XL (Berlin: Springer), p. 372Google Scholar