Observation of Fine Time Structures in the Cosmic Proton and Helium Fluxes with the Alpha Magnetic Spectrometer on the International Space Station

被引：116

作者：

Aguilar, M. ^{[32
]}

Cavasonza, L. Ali ^{[1
,2
]}

Alpat, B. ^{[37
]}

Ambrosi, G. ^{[37
]}

Arruda, L. ^{[30
]}

Attig, N. ^{[25
,26
]}

Aupetit, S. ^{[20
,21
]}

Azzarello, P. ^{[19
]}

Bachlechner, A. ^{[1
,2
]}

Barao, F. ^{[30
]}

Barrau, A. ^{[20
,21
]}

Barrin, L. ^{[18
]}

Bartoloni, A. ^{[42
]}

Basara, L. ^{[40
]}

Basegmez-du Pree, S. ^{[8
]}

Battarbee, M. ^{[50
]}

Battiston, R. ^{[40
,41
,51
]}

Becker, U. ^{[12
]}

Behlmann, M. ^{[12
]}

Beischer, B. ^{[1
,2
]}

Berdugo, J. ^{[32
]}

Bertucci, B. ^{[37
,38
]}

Bindel, K. F. ^{[27
]}

Bindi, V. ^{[23
]}

de Boer, W. ^{[27
]}

Bollweg, K. ^{[24
]}

Bonnivard, V. ^{[20
,21
]}

Borgia, B. ^{[42
,43
]}

Boschini, M. J. ^{[34
]}

Bourquin, M. ^{[19
]}

Bueno, E. F. ^{[44
]}

Burger, J. ^{[12
]}

Cadoux, F. ^{[19
]}

Cai, X. D. ^{[12
]}

Capell, M. ^{[12
]}

Caroff, S. ^{[4
,5
]}

Casaus, J. ^{[32
]}

Castellini, G. ^{[17
]}

Cervelli, F. ^{[39
]}

Chae, M. J. ^{[45
]}

Chang, Y. H. ^{[13
]}

Chen, A. I. ^{[12
]}

Chen, G. M. ^{[8
]}

Chen, H. S. ^{[8
,9
]}

Chen, Y. ^{[19
]}

Cheng, L. ^{[46
]}

Chou, H. Y. ^{[13
]}

Choumilov, E. ^{[12
]}

Choutko, V. ^{[12
]}

Chung, C. H. ^{[1
,2
]}

机构：

[1] Rhein Westfal TH Aachen, Phys Inst 1, D-52056 Aachen, Germany

[2] Rhein Westfal TH Aachen, JARA FAME, D-52056 Aachen, Germany

[3] Middle East Tech Univ, Dept Phys, TR-06800 Ankara, Turkey

[4] CNRS IN2P3, LAPP, F-74941 Annecy Le Vieux, France

[5] Univ Savoie Mont Blanc, F-74941 Annecy Le Vieux, France

[6] Beihang Univ BUAA, Beijing 100191, Peoples R China

[7] Chinese Acad Sci, IEE, Beijing 100190, Peoples R China

[8] Chinese Acad Sci, IHEP, Beijing 100049, Peoples R China

[9] UCAS, Beijing 100049, Peoples R China

[10] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

[11] Univ Bologna, I-40126 Bologna, Italy

[12] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[13] NCU, Chungli 32054, Tao Yuan, Taiwan

[14] Univ Maryland, East West Ctr Space Sci, College Pk, MD 20742 USA

[15] Univ Maryland, IPST, College Pk, MD 20742 USA

[16] Kyungpook Natl Univ, CHEP, Daegu 41566, South Korea

[17] CNR IROE, I-50125 Florence, Italy

[18] European Org Nucl Res CERN, CH-1211 Geneva 23, Switzerland

[19] Univ Geneva, DPNCS, CH-1211 Geneva 4, Switzerland

[20] CNRS IN2P3, LPSC, F-38026 Grenoble, France

[21] Univ Grenoble Alpes, F-38026 Grenoble, France

[22] SYSU, Guangzhou 510275, Guangdong, Peoples R China

[23] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA

[24] Jacobs Engn & Business Integra, Nat Aeronaut & Space Adm, Johnson Space Ctr, Houston, TX 77058 USA

[25] Res Ctr Julich, Julich Supercomp Ctr, D-52425 Julich, Germany

[26] Res Ctr Julich, JARA FAME, D-52425 Julich, Germany

[27] Karlsruhe Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany

[28] IAC, E-38205 San Cristobal la Laguna, Spain

[29] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain

[30] Lab Instrumentacao & Fis Expt Particulas LIP, P-1000 Lisbon, Portugal

[31] NCSIST, Longtan 32546, Tao Yuan, Taiwan

[32] CIEMAT, E-28040 Madrid, Spain

[33] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico

[34] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy

[35] Univ Milano Bicocca, I-20126 Milan, Italy

[36] Southeast Univ SEU, Nanjing 210096, Jiangsu, Peoples R China

[37] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy

[38] Univ Perugia, I-06100 Perugia, Italy

[39] Ist Nazl Fis Nucl, Sez Pisa, I-56100 Pisa, Italy

[40] Ist Nazl Fis Nucl, TIFPA, I-38123 Povo, Trento, Italy

[41] Univ Trento, I-38123 Povo, Trento, Italy

[42] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy

[43] Univ Roma La Sapienza, I-00185 Rome, Italy

[44] Univ Sao Paulo, Inst Fis Sao Carlos, CP 369, BR-13560970 Sao Paulo, SP, Brazil

[45] Ewha Womans Univ, Dept Phys, Seoul, South Korea

[46] Shandong Univ SDU, Jinan, Shandong, Peoples R China

[47] Natl Cheng Kung Univ, Tainan 70101, Taiwan

[48] ASGC, Taipei 11529, Taiwan

[49] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[50] Univ Turku, Dept Phys & Astron, Space Res Lab, FI-20014 Turku, Finland

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 05期

基金：

欧盟地平线“2020”; 芬兰科学院; 瑞士国家科学基金会; 美国国家科学基金会; 巴西圣保罗研究基金会;

关键词：

GEOMAGNETIC REFERENCE FIELD; MERGED INTERACTION REGIONS; SOLAR MODULATION; RAY MODULATION; AMS-02; GENERATION; SIMULATION; DETECTOR; CYCLE;

D O I：

10.1103/PhysRevLett.121.051101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the precision measurement from May 2011 to May 2017 (79 Bartels rotations) of the proton fluxes at rigidities from 1 to 60 GV and the helium fluxes from 1.9 to 60 GV based on a total of 1 x 109 events collected with the Alpha Magnetic Spectrometer aboard the International Space Station. This measurement is in solar cycle 24, which has the solar maximum in April 2014. We observed that, below 40 GV, the proton flux and the helium flux show nearly identical fine structures in both time and relative amplitude. The amplitudes of the flux structures decrease with increasing rigidity and vanish above 40 GV. The amplitudes of the structures are reduced during the time period, which started one year after solar maximum, when the proton and helium fluxes steadily increase. Above similar to 3 GV the p/He flux ratio is time independent. We observed that below similar to 3 GV the ratio has a long-term decrease coinciding with the period during which the fluxes start to rise.

引用

页数：7

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