Engineering topics
Publications and source records attributed to Rosenvinge, T. T. von.
New observations of the abundances and energy spectra of the isotopes of Mg, Al, and Si from ACE/CRIS are used to extend our previous results on the composition of refractory nuclides in cosmic-ray source material.
Heavy-ion composition observations from the Solar Isotope Spectrometer on ACE are reported for four 3He-rich solar-energetic particle (SEP) events that occurred in August 2002.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
We find that the relative abundance of cosmic ray calcium isotopes in the cosmic-ray source are very similar to those found in solar-system material, in spite of the fact that different types of stars are thought to be responsible for producing these two isotopes. This observation is consistent with the view that cosmic rays are derived from a mixed sample of interstellar matter.
We have examined the FIP fractionation effects on the average composition of the small SEP events, and discuss the ensuing implications for the origin and acceleration of nuclei in these events.
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We suggest that cosmic rays probably represent a sample of contemporary interstellar matter, at least for refractory species.