Successive measurements of cosmic-ray antiproton spectrum in a positive phase of the solar cycle

Citation
T. Maeno et al., Successive measurements of cosmic-ray antiproton spectrum in a positive phase of the solar cycle, ASTROPART P, 16(2), 2001, pp. 121-128
Citations number
48
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
ASTROPARTICLE PHYSICS
ISSN journal
0927-6505 → ACNP
Volume
16
Issue
2
Year of publication
2001
Pages
121 - 128
Database
ISI
SICI code
0927-6505(200111)16:2<121:SMOCAS>2.0.ZU;2-7
Abstract
The energy spectrum of cosmic-ray antiprotons (p's) has been measured by BE SS successively in 1993, 1995, 1997 and 1998. In total, 848 (p) over bar 's were clearly identified in energy range 0.18-4.20 GeV. From these successi ve measurements of the (p) over bar spectrum at various solar activity, we discuss about the effect of the solar modulation and the origin of cosmic-r ay (p) over bar 's. The (p) over bar /p ratios showed no distinctive year-t o-year variation during the positive Sun's polarity phase. (C) 2001 Elsevie r Science B.V. All rights reserved.