Abstract
A new surge of interest is likely to spring up in the near future against the background of speculations on the enhancement of the low-energy antiproton flux from some of the predicted primary antiproton sources owing to the probable occurrence of the rapid fluctuation of the solar modulation in 1999. A previous calculation of antiproton flux based on a specific model of particle production and of a galactic propagation is updated here. The results estimated for moderate solar modulation are in better agreement with both low-energy and high-energy data for [Formula: see text] values by induction of the roles of primary sources of antiprotons and also of some other factors mentioned in this letter.
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