An explanation for cosmic-ray source abundances including nitrogen

Details An explanation for cosmic-ray source abundances including nitrogen An explanation for cosmic-ray source abundances including nitrogen

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...352l..49s&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 352, April 1, 1990, p. L49-L52. Research supported by the U.S. Na

Astronomy and Astrophysics

Astrophysics

14

Abundance, Cosmic Rays, Nitrogen, Carbon Stars, Flare Stars, Heavy Ions, Ionization Potentials, Wolf-Rayet Stars

Scientific paper

The abundance of nitrogen in cosmic rays, N/O = 0.03 + or - 0.01, corrected back to the sources, is low according to Weber and Gupta (1987). This value, and the remainder of cosmic-ray source abundances, including those of H and He, is explained. Based on these assumptions, the cosmic-ray source composition has been calculated; it agrees with the experimental one to 20 percent. Only the calculated abundance of N is 47 percent high; however, the standard deviation of the poorly known N abundance is over 30 percent. The calculated N/O ratio at cosmic-ray sources is 0.047.

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