Antiprotons at solar maximum

被引:83
作者
Bieber, JW [1 ]
Burger, RA
Engel, R
Gaisser, TK
Roesler, S
Stanev, T
机构
[1] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA
[2] Potchefstroom Univ Christian Higher Educ, Sch Phys, Space Res Unit, ZA-2520 Potchefstroom, South Africa
[3] CERN, CH-1211 Geneva 23, Switzerland
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevLett.83.674
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
New measurements with good statistics will make it possible to observe the time variation of cosmic antiprotons at I 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.
引用
收藏
页码:674 / 677
页数:4
相关论文
共 49 条
[1]  
ADRIANI, 1998, P 25 INT COSM RAY C, V5, P49
[2]   New access to ethanoisoquinolones [J].
Barbry, D ;
Hautecoeur, C ;
Sokolowski, G .
HETEROCYCLIC COMMUNICATIONS, 1997, 3 (04) :369-370
[3]  
BASINI G, 1997, P 25 INT COSM RAY C, V6, P381
[4]  
BECKER U, 1999, P 29 INT C HIGH EN P, V2, P1458
[5]  
BELLOTTI R, IN PRESS PHYS REV D
[6]  
BERGSTROM L, ASTROPH9902012, P9
[7]   PROTON AND ELECTRON MEAN FREE PATHS - THE PALMER CONSENSUS REVISITED [J].
BIEBER, JW ;
MATTHAEUS, WH ;
SMITH, CW ;
WANNER, W ;
KALLENRODE, MB ;
WIBBERENZ, G .
ASTROPHYSICAL JOURNAL, 1994, 420 (01) :294-306
[8]   The cosmic-ray antiproton flux between 0.62 AND 3.19 GeV measured near solar minimum activity [J].
Boezio, M ;
Carlson, P ;
Francke, T ;
Weber, N ;
Suffert, M ;
Hof, M ;
Menn, W ;
Simon, M ;
Stephens, SA ;
Bellotti, R ;
Cafagna, F ;
Castellano, M ;
Circella, M ;
DeCataldo, G ;
DeMarzo, C ;
Giglietto, N ;
Spinelli, P ;
Bocciolini, M ;
Papini, P ;
Perego, A ;
Piccardi, S ;
Spillantini, P ;
Basini, G ;
Ricci, M ;
Codino, A ;
Finetti, N ;
Grimani, C ;
Candusso, M ;
Casolino, M ;
DePascale, MP ;
Morselli, A ;
Picozza, P ;
Sparvoli, R ;
Barbiellini, G ;
Bravar, U ;
Schiavon, P ;
Vacchi, A ;
Zampa, N ;
Mitchell, JW ;
Ormes, JF ;
Streitmatter, RE ;
Golden, RL ;
Stochaj, SJ .
ASTROPHYSICAL JOURNAL, 1997, 487 (01) :415-423
[9]  
BOEZIO M, IN PRESS
[10]   Which fraction of the measured cosmic-ray antiprotons might be due to neutralino annihilation in the galactic halo? [J].
Bottino, A ;
Donato, F ;
Fornengo, N ;
Salati, P .
PHYSICAL REVIEW D, 1998, 58 (12)