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Published November 15, 1988 | Version Published
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Evidence for anomalous cosmic-ray hydrogen

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Abstract

We present evidence for the emergence of a measurable anomalous cosmic-ray hydrogen component in 1987 which may account for 20%-40% of the total hydrogen flux at 60 MeV. Comparing this flux with that of anomalous cosmic-ray helium, we estimate that the H I/He I ratio in the very local interstellar medium is ~4, consistent with determinations from solar ultraviolet backscatter measurements.

Additional Information

© 1988 The American Astronomical Society. Received 1988 August 8; accepted 1988 August 18. We thank F. B. McDonald and W. R. Webber for their helpful discussions and suggestions. We also appreciate the contributions of the other Voyager CRS team members at Caltech and the Goddard Space Flight Center. This work was supported in part by NASA under contract NAS 7-918 and grant NGR 05-002-160.

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Published - 1988ApJ___334L__77C.pdf

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43798
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CaltechAUTHORS:20140212-133657111

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http://adsabs.harvard.edu/doi/10.1086/185316 (URL)

Funding

NASA
NAS 7-918
NASA
NGR 05-002-160

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2014-02-13
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2021-11-10
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Space Radiation Laboratory