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

6533b83afe1ef96bd12a710d

RESEARCH PRODUCT

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

J. Zhao Hongbo Hu P. R. Shen X. C. Yang A. Surdo Yicheng Guo Y. H. Tan Zhaoyang Feng F. R. Zhu X. J. Bi T. Di Girolamo J. K. K. Liu S. Vernetto Zhaxisangzhu Zhengguo Cao S. Z. Chen Q. Q. Zhu L. Zhang T. L. Chen R. Santonico S. Mastroianni C. Vigorito C. Vigorito C. Y. Wu S. W. Cui C. Q. Liu Q. B. Gou C. C. Ning P. Vallania F. Shi S. M. Mari S. M. Mari B. D'ettorre Piazzoli A. D'amone H. J. Li H. R. Wu Zhaxiciren R. Iuppa L. Xue P. Salvini G. Marsella W. Gao P. Bernardini H. Wang H. Lu Danzengluobu S. Catalanotti David Ruffolo A. F. Yuan B. Z. Dai Y. J. Zhang Huihai He M. Zha G. Di Sciascio X. Y. Zhang Labaciren Xiangdong Sheng P. Pistilli P. Pistilli H. M. Zhang Minghui Liu I. De Mitri Q. Y. Yang P. Montini X. H. Ma X. X. Zhou L. Perrone Haibing Hu L. L. Ma H. Y. Jia G. Mancarella B. Bartoli Cunfeng Feng M. Iacovacci Z. G. Yao

subject

Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Cosmic ray 01 natural sciences cosmic rays 0103 physical sciences Anisotropy 010303 astronomy & astrophysics Argo cosmic ray Astroparticle physics Physics High Energy Astrophysical Phenomena (astro-ph.HE)010308 nuclear & particles physics Settore FIS/01 - Fisica Sperimentale Northern Hemisphere Astronomy astroparticle physic Astronomy and Astrophysics astroparticle physics cosmic ray anysotropy argo-ybj Astronomy and Astrophysic astroparticle physics; cosmic rays; Astronomy and Astrophysics; Space and Planetary Science astroparticle physics 13. Climate action Space and Planetary Science Astrophysics - High Energy Astrophysical Phenomena

description

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.

year	journal	country	edition	language
2018-05-23

https://dx.doi.org/10.48550/arxiv.1805.08980