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

被引：140

作者：

Maeno, T ^{[1
]}

Orito, S

Matsunaga, H

Abe, K

Anraku, K

Asaoka, Y

Fujikawa, M

Imori, M

Makida, Y

Matsui, N

Matsumoto, H

Mitchell, J

Mitsui, T

Moiseev, A

Motoki, M

Nishimura, J

Nozaki, M

Ormes, J

Saeki, T

Sanuki, T

Sasaki, M

Seo, ES

Shikaze, Y

Sonoda, T

Streitmatter, R

Suzuki, J

Tanaka, K

Ueda, I

Wang, JZ

Yajima, N

Yamagami, T

Yamamoto, A

Yoshida, T

Yoshimura, K

机构：

[1] Kobe Univ, Kobe, Hyogo 6578501, Japan

[2] Univ Tokyo, Tokyo 1130033, Japan

[3] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[5] Univ Maryland, College Pk, MD 20742 USA

[6] ISAS, Sagamihara, Kanagawa 2298510, Japan

来源：

ASTROPARTICLE PHYSICS | 2001年 / 16卷 / 02期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

cosmic-ray; antiproton; measurements; solar modulation;

D O I：

10.1016/S0927-6505(01)00107-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The energy spectrum of cosmic-ray antiprotons (p's) has been measured by BESS 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 successive 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-ray (p) over bar 's. The (p) over bar /p ratios showed no distinctive year-to-year variation during the positive Sun's polarity phase. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：121 / 128

页数：8

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