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Evidence for anomalous cosmic-ray hydrogen

Christian, E. R. and Cummings, A. C. and Stone, E. C. (1988) Evidence for anomalous cosmic-ray hydrogen. Astrophysical Journal, 334 (2). L77-L80. ISSN 0004-637X. http://resolver.caltech.edu/CaltechAUTHORS:20140212-133657111

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1086/185316 DOIArticle
http://adsabs.harvard.edu/doi/10.1086/185316ADSArticle
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.
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANAS 7-918
NASANGR 05-002-160
Subject Keywords:cosmic rays: abundances - cosmic rays: general - interstellar: abundances
Record Number:CaltechAUTHORS:20140212-133657111
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140212-133657111
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43798
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Feb 2014 21:56
Last Modified:13 Feb 2014 21:56

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