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cosmic ray source matter

International Astronomical Union Colloquium (1)

International Astronomical Union (1)

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The Source Composition of Galactic Cosmic Rays as Possibly Originated from the Dust in the Circumstellar and Interstellar Space
Kunitomo Sakurai
Journal:

International Astronomical Union Colloquium / Volume 126 / 1991

Published online by Cambridge University Press:

12 April 2016, pp. 433-436

Print publication:

1991
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The chemical composition of galactic cosmic rays in their sources is similar to that of interstellar clouds or grains which are relatively enriched in refractory and siderophile elements as compared with the chemical composition of the solar atmosphere. Taking into account this fact, it is shown that the cosmic ray source matter can be identified as the dust or grains observed in the envelopes of red supergiant stars or the matter originally ejected from supernova explosions.