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Astrophysical constraints from gamma-ray spectroscopy
Diehl, Roland; von Ballmoos, Peter; Prantzos, Nikos
Gamma-ray lines from cosmic sources provide unique isotopic information, since they originate from energy level transitions in the atomic nucleus. Gamma-ray telescopes explored this astronomical window in the past three decades, detecting radioactive isotopes that have been ejected in interstellar space by cosmic nucleosynthesis events and nuclei …
Radioactive isotopes in the cosmic rays
Duvernois, M. A.
The primary (source) and secondary (spallogenic) galactic cosmic rays offer an opportunity to study recently synthesized nuclear material. The radioactive isotopes in both populations are of interest for understanding the cosmic ray source and propagation. This paper briefly reports on Ulysses High Energy Telescope (HET) observations of some cosmi…