The Anomalous Abundance of Cosmic-Ray Nitrogen and Oxygen Nuclei at Low Energies
Abstract
Recent measurements using the Goddard-University of New Hampshire cosmic-ray telescope on the Pioneer 10 spacecraft have revealed an anomalous spectrum of nitrogen and oxygen nuclei relative to other nuclei such as He and C, in the energy range 3-30 MeV per nucleon. The intensity of nitrogen and oxygen nuclei is enhanced by a factor of up to 20 relative to their abundance in galactic or solar cosmic rays. It is argued that this is most likely a new extrasolar component of cosmic rays. Subfrd heading: abundances - cosmic rays
- Publication:
-
The Astrophysical Journal
- Pub Date:
- February 1974
- DOI:
- 10.1086/181407
- Bibcode:
- 1974ApJ...187L.105M