Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...465..982d&link_type=abstract
Astrophysical Journal v.465, p.982
Astronomy and Astrophysics
Astronomy
36
Ism: Cosmic Rays, Nuclear Reactions, Nucleosynthesis, Abundances, Sun: Abundances
Scientific paper
The nucleosynthetic origin of the galactic cosmic-ray sources (GCRS) is a matter of some considerable interest (e.g., Leske; Connell & Simpson; DuVernois et al.). Any understanding of this origin requires an accurate determination of the source elemental abundances. These abundances are determined by comparing the Ulysses High-Energy Telescope (HET) observations in the heliosphere, made at an average energy of 185 MeV nucleon, and a solar modulation level of Φ = 750 MV, with results of interstellar propagation calculations. We also incorporate the HEAO 3 C-2 elemental measurements into our determinations. By comparing the data with propagated trial-source abundances, we derive, subject to the parameters of our propagation algorithm, the best-fit source elemental abundances.
DuVernois Michael A.
Thayer M. R.
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