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Elemental abundance enhancement in cosmic rays and their relation to interstellar depletion

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Abstract

We have shown that a correlation exists between the enhancement of abundance of heavy nuclei in cosmic rays and their depletion in interstellar space. A correlation also exists between the abundance enhancement and condensation temperature. We suggest that these correlations imply that much of the heavy nuclei content of cosmic rays may come from grains. A possible model is that grains in star-cloud complexes are accelerated to injection energies by radiation pressure in a supernova explosion and, subsequently, the grain debris is accelerated by shocks to cosmic ray energies.

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Authors and Affiliations

  1. Tata Institute of Fundamental Research, Bombay, India

    S. P. Tarafdar & Krishna M. V. Apparao

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  1. S. P. Tarafdar
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  2. Krishna M. V. Apparao
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Tarafdar, S.P., Apparao, K.M.V. Elemental abundance enhancement in cosmic rays and their relation to interstellar depletion. Astrophys Space Sci 77, 521–527 (1981). https://doi.org/10.1007/BF00649477

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  • DOI: https://doi.org/10.1007/BF00649477

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