Published August 1, 1981
| Published
Journal Article
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Recent Cosmic-Ray Antiproton Measurements and Astrophysical Implications
- Creators
- Buffington, Andrew
- Schindler, Stephen M.
Abstract
Cosmic-ray antiprotons have been detected by a new balloon-borne experiment which covers the energy range between 130 and 320 MeV. Fourteen detected events yield a measured flux of 1.7±0.5 x 10^(-4) antiprotons m^(-2) sr^(-1) s(-1) MeV^(-1). The corresponding antiproton/proton ratio is 2.2± 0.6 x 10^(-4), only slightly smaller than the ratio observed by other experiments at higher energies. The measured flux is significantly larger than predicted, and some cosmic-ray models which could explain this result are discussed.
Additional Information
© 1981 The American Astronomical Society. Received 1981 March 16; accepted 1981 April 14. This work was supported by grants NGR 05-003-553 and NGR 05-002-160 from the National Aeronautics and Space Administration. C. R. Pennypacker provided invaluable assistance in the preparation of the experiment.Attached Files
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Additional details
- Eprint ID
- 45025
- Resolver ID
- CaltechAUTHORS:20140417-142336280
- NASA
- NGR 05-003-553
- NASA
- NGR 05-002-160
- Created
-
2014-04-25Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Other Numbering System Name
- Space Radiation Laboratory
- Other Numbering System Identifier
- 1981-04