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

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 04期

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

页码：674 / 677

页数：4

共 49 条

[21] Measurement of cosmic-ray antiprotons from 3.7 to 19 GeV [J].

Hof, M ;

Menn, W ;

Pfeifer, C ;

Simon, M ;

Golden, RL ;

Stochaj, SJ ;

Stephens, SA ;

Basini, G ;

Ricci, M ;

Brancaccio, FM ;

Papini, P ;

Piccardi, S ;

Spillantini, P ;

DePascale, MP ;

Morselli, A ;

Picozza, P ;

Brunetti, MT ;

Codino, A ;

Grimani, C ;

Menichelli, M ;

Mitchell, JW ;

Ormes, JF ;

Streitmatter, RE .

ASTROPHYSICAL JOURNAL, 1996, 467 (01) :L33-L36

[22] EFFECTS OF DRIFT ON THE TRANSPORT OF COSMIC-RAYS .4. MODULATION BY A WAVY INTER-PLANETARY CURRENT SHEET [J].

JOKIPII, JR ;

THOMAS, B .

ASTROPHYSICAL JOURNAL, 1981, 243 (03) :1115-1122

[23] EFFECTS OF PARTICLE DRIFT ON COSMIC-RAY TRANSPORT .1. GENERAL PROPERTIES, APPLICATION TO SOLAR MODULATION [J].

JOKIPII, JR ;

LEVY, EH ;

HUBBARD, WB .

ASTROPHYSICAL JOURNAL, 1977, 213 (03) :861-868

[24] EFFECTS OF DRIFT ON THE TRANSPORT OF COSMIC-RAYS .6. A 3-DIMENSIONAL MODEL INCLUDING DIFFUSION [J].

KOTA, J ;

JOKIPII, JR .

ASTROPHYSICAL JOURNAL, 1983, 265 (01) :573-581

[25] Effects of solar modulation on the low-energy cosmic-ray antiproton/proton ratio [J].

Labrador, AW ;

Mewaldt, RA .

ASTROPHYSICAL JOURNAL, 1997, 480 (01) :371-376

[26] Measurement of low-energy cosmic-ray antiprotons at solar minimum [J].

Matsunaga, H ;

Orito, S ;

Matsumoto, H ;

Yoshimura, K ;

Moiseev, A ;

Anraku, K ;

Golden, R ;

Imori, M ;

Makida, Y ;

Mitchell, J ;

Motoki, M ;

Nishimura, J ;

Nozaki, M ;

Ormes, J ;

Saeki, T ;

Sanuki, T ;

Streitmatter, R ;

Suzuki, J ;

Tanaka, K ;

Ueda, I ;

Yajima, N ;

Yamagami, T ;

Yamamoto, A ;

Yoshida, T .

PHYSICAL REVIEW LETTERS, 1998, 81 (19) :4052-4055

[27]

MENN W, 1997, P 25 INT COSM RAY C, V3, P409

[28] SOLAR-STELLAR OUTER ATMOSPHERES AND ENERGETIC PARTICLES, AND GALACTIC COSMIC-RAYS [J].

MEYER, JP .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1985, 57 (01) :173-204

[29] Measurement of 0.25-3.2 GeV antiprotons in the cosmic radiation [J].

Mitchell, JW ;

Barbier, LM ;

Christian, ER ;

Krizmanic, JF ;

Krombel, K ;

Ormes, JF ;

Streitmatter, RE ;

Labrador, AW ;

Davis, AJ ;

Mewaldt, RA ;

Schindler, SM ;

Golden, RL ;

Stochaj, SJ ;

Webber, WR ;

Menn, W ;

Hof, M ;

Reimer, O ;

Simon, M ;

Rasmussen, IL .

PHYSICAL REVIEW LETTERS, 1996, 76 (17) :3057-3060

[30] Expected enhancement of the primary antiproton flux at the solar minimum [J].

Mitsui, T ;

Maki, K ;

Orito, S .

PHYSICS LETTERS B, 1996, 389 (01) :169-175

← 1 2 3 4 5 →