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Article overview
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Antiprotons at Solar Maximum | John W. Bieber
; R. A. Burger
; Ralph Engel
; Thomas K. Gaisser
; Stefan Roesler
; Todor Stanev
; | Date: |
11 Mar 1999 | Journal: | Phys.Rev.Lett. 83 (1999) 674-677 | Subject: | astro-ph | Abstract: | New measurements with good statistics will make it possible to observe the time variation of cosmic antiprotons at 1 AU through the approaching peak of solar activity. We report a new computation of the interstellar antiproton spectrum expected from collisions between cosmic protons and the interstellar gas. This spectrum is then used as input to a steady-state drift model of solar modulation, in order to provide predictions for the antiproton spectrum as well as the antiproton/proton ratio at 1 AU. Our model predicts a surprisingly large, rapid increase in the antiproton/proton ratio through the next solar maximum, followed by a large excursion in the ratio during the following decade. | Source: | arXiv, astro-ph/9903163 | Services: | Forum | Review | PDF | Favorites |
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