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Interpretation of the Low-Energy Cosmic Ray Antiproton/Proton Ratio

Labrador, A. W. and Mewaldt, R. A. (1995) Interpretation of the Low-Energy Cosmic Ray Antiproton/Proton Ratio. In: Proceedings of the 24th International Cosmic Ray Conference. Vol.3. International Union of Pure and Applied Physics , pp. 68-71.

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We examine the solar modulation of cosmic ray protons and antiprotons, and discuss the resulting effects on the low-energy antiproton/proton ratio at 1 AU. We find that the anitiproton/proton ratio at energies >3 GeV is a useful diagnostic of cosmic ray transport in the Galaxy. However, at energies <l GeV the expected ratio is much more uncertain because of variation in the relative modulation of protons and antiprotons and uncertainties in the interstellar spectra. As a result, it is recouunended that attention be given instead to interpretation of the cosmic ray antiproton energy spectrum measured rather than to the antiproton/proton ratio.

Item Type:Book Section
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URLURL TypeDescription
Labrador, A. W.0000-0001-9178-5349
Mewaldt, R. A.0000-0003-2178-9111
Additional Information:© IUPAP. Provided by the NASA Astrophysics Data System. This work was funded by NASA under NAGW-1919. One of us (AL) is grateful for a NASA Graduate Fellowship. We thank W.R. Webber, T. Gaisser, R. Shaeffer, and R. Streitmatter for useful discussions.
Group:Space Radiation Laboratory
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NASA Graduate FellowshipUNSPECIFIED
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Space Radiation Laboratory1995-26
Record Number:CaltechAUTHORS:20140617-163638959
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46317
Deposited By: Deborah Miles
Deposited On:07 Jul 2014 06:04
Last Modified:20 Feb 2020 14:33

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