Galactic Cosmic-Ray Anisotropy in the Northern Hemisphere from the ARGO-YBJ Experiment during 2008-2012

被引：14

作者：

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

Bernardini, P. ^{[3
,4
]}

Bi, X. J. ^{[5
,6
]}

Cao, Z. ^{[5
,6
]}

Catalanotti, S. ^{[1
,2
]}

Chen, S. Z. ^{[5
]}

Chen, T. L. ^{[7
]}

Cui, S. W. ^{[8
]}

Dai, B. Z. ^{[9
]}

D'Amone, A. ^{[3
,4
]}

Danzengluobu ^{[7
]}

De Mitri, I. ^{[4
,23
]}

Piazzoli, B. D'Ettorre ^{[1
,10
]}

Di Girolamo, T. ^{[1
,2
]}

Di Sciascio, G. ^{[10
]}

Feng, C. F. ^{[11
]}

Feng, Z. Y. ^{[12
]}

Gao, W. ^{[5
,6
]}

Gou, Q. B. ^{[5
]}

Guo, Y. Q. ^{[5
]}

He, H. H. ^{[5
,6
]}

Hu, Haibing ^{[7
]}

Hu, Hongbo ^{[5
]}

Iacovacci, M. ^{[1
,2
]}

Iuppa, R. ^{[13
,14
]}

Jia, H. Y. ^{[11
]}

Labaciren ^{[7
]}

Li, H. J. ^{[7
]}

Liu, C. ^{[5
]}

Liu, J. ^{[9
]}

Liu, M. Y. ^{[7
]}

Lu, H. ^{[5
]}

Ma, L. L. ^{[5
]}

Ma, X. H. ^{[5
]}

Mancarella, G. ^{[3
,4
]}

Mari, S. M.

Marsella, G. ^{[3
,4
]}

Mastroianni, S. ^{[2
]}

Montini, P. ^{[17
]}

Ning, C. C. ^{[7
]}

Perrone, L. ^{[3
,4
]}

Pistilli, P. ^{[15
,16
]}

Ruffolo, D. ^{[24
]}

Salvini, P. ^{[18
]}

Santonico, R. ^{[9
,19
]}

Shen, P. R. ^{[5
]}

Sheng, X. D. ^{[5
]}

Shi, F. ^{[5
]}

Surdo, A. ^{[4
]}

Tan, Y. H. ^{[5
]}

机构：

[1] Univ Naples Federico II, Complesso Univ Monte St Angelo, Dipartimento Fis, Via Cinthia, I-80126 Naples, Italy

[2] Univ Naples Federico II, Complesso Univ Monte St Angelo, Ist Nazl Fis Nucl, Sez Napoli, Via Cinthia, I-80126 Naples, Italy

[3] Univ Salento, Dipartimento Matemat & Fis Ennio De Giorgi, Via Arnesano, I-73100 Lecce, Italy

[4] Ist Nazl Fis Nucl, Sez Lecce, Via Arnesano, I-73100 Lecce, Italy

[5] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, POB 918, Beijing 100049, Peoples R China

[6] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[7] Tibet Univ, Lhasa 850000, Xizang, Peoples R China

[8] Hebei Normal Univ, Shijiazhuang 050024, Hebei, Peoples R China

[9] Yunnan Univ, 2 North Cuihu Rd, Kunming 650091, Yunnan, Peoples R China

[10] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Via Ric Sci 1, I-00133 I- Roma, Italy

[11] Shandong Univ, Jinan 250100, Shandong, Peoples R China

[12] Southwest Jiaotong Univ, Chengdu 610031, Sichuan, Peoples R China

[13] Univ Trento, Dipartimento Fis, Via Sommarive 14, I-38123 Povo, Italy

[14] Trento Inst Fundamental Phys & Applicat, Via Sommarive 14, I-38123 I- Povo, Italy

[15] Univ Rome Tre, Dipartmento Fis, Via Vasca Navale 84, I-00146 Rome, Italy

[16] Ist Nazl Fis Nucl, Sez Roma Tre, Via Vasca Navale 84, I-00146 Rome, Italy

[17] Univ Roma La Sapienza, Dipartmento Fis, Piazzale Aldo Moro 2, I-00185 Rome, Italy

[18] Ist Nazl Fis Nucl, Sez Roma, Piazzale Aldo Moro 2, I-00185 I- Roma, Italy

[19] Ist Nazl Fis Nucl, Sez Pavia, Via Bassi 6, I-27100 Pavia, Italy

[20] Univ Roma Tor Vergata, Dipartmento Fis, Via Ric Sci 1, I-00133 Rome, Italy

[21] Ist Nazl Astrofis, Osservatorio Astrofis Torino, Via P Giuria 1, I-10125 Turin, Italy

[22] Ist Nazl Fis Nucl, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy

[23] Univ Turin, Dipartmento Fis, Via P Giuria 1, I-10125 Turin, Italy

[24] GSSI, Via M Iacobucci 2, I-67100 Laquila, Italy

来源：

ASTROPHYSICAL JOURNAL | 2018年 / 861卷 / 02期

基金：

中国国家自然科学基金;

关键词：

astroparticle physics; cosmic rays; AIR-SHOWER ARRAY; SCALE SIDEREAL ANISOTROPY; ARRIVAL DIRECTIONS; SKY SURVEY; ENERGY; INTENSITY; DETECTOR;

D O I：

10.3847/1538-4357/aac6cc

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper reports on the observation of the sidereal large-scale anisotropy of cosmic rays using data collected by the ARGO-YBJ experiment over 5 years (2008-2012). This analysis extends previous work limited to the period from 2008 January to 2009 December, near the minimum of solar activity between cycles 23 and 24. With the new data sample, the period of solar cycle 24 from near minimum to maximum is investigated. A new method is used to improve the energy reconstruction, allowing us to cover a much wider energy range, from 4 to 520 TeV. Below 100 TeV, the anisotropy is dominated by two wide regions, the so-called "tail-in" and "loss-cone" features. At higher energies, a dramatic change of the morphology is confirmed. The yearly time dependence of the anisotropy is investigated. Finally, no noticeable variation of cosmic-ray anisotropy with solar activity is observed for a median energy of 7 TeV.

引用

页数：7

共 58 条

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