Chin. Phys. Lett.  2017, Vol. 34 Issue (12): 129601    DOI: 10.1088/0256-307X/34/12/129601
Simulation of the Galactic Cosmic Ray Shadow of the Sun
Mohsin Saeed1,2,3, Min Zha1,2**, Zhen Cao1
1Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
2University of Chinese Academy of Sciences, Beijing 100049
3State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100049
Cite this article:   
Mohsin Saeed, Min Zha, Zhen Cao 2017 Chin. Phys. Lett. 34 129601
Download: PDF(1559KB)   PDF(mobile)(1565KB)   HTML
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks
Abstract The cosmic-ray particles of TeV-regime, outside the solar system are blocked in their way to the Earth, a deficit of particles is observed corresponding to the location of the Sun known as the Sun shadow. The center of the Sun shadow is shifted from its nominal position due to the presence of magnetic fields in interplanetary space, and this shift is used indirectly as a probe to study the solar magnetic field that is difficult to measure otherwise. A detailed Monte Carlo simulation of galactic cosmic-ray propagation in the Earth–Sun system is carried out to disentangle the cumulative effects of solar, interplanetary and geomagnetic fields. The shadowing effects and the displacements results of the Sun shadow in different solar activities are reproduced and discussed.
Received: 08 May 2017      Published: 24 November 2017
PACS:  96.50.S- (Cosmic rays) (Interplanetary propagation and effects)  
  96.60.Q- (Solar activity)  
Fund: Supported by the National Natural Science Foundation of China under Grant No 11675187, the Specialized Research Fund for State Key Laboratories, and the CAS-TWAS President Fellowship Programme.
URL:       OR
E-mail this article
E-mail Alert
Articles by authors
Mohsin Saeed
Min Zha
Zhen Cao
[1]Clark G W 1957 Phys. Rev. 108 450
[2]Amenomori M et al 2013 Phys. Rev. Lett. 111 011101
[3]Aielli G et al 2011 Astrophys. J. 729 113
[4]Heck D et al 1998 Forschungszentrum Karlsruhe Report FZKA 6019
[5]Battistoni G et al 2007 AIP Conf. Proc. 896 31
[6]Pierog T et al 2015 Phys. Rev. C 92 034906
[7]Yoon Y S et al 2011 Astrophys. J. 728 122
[8]Bartoli B et al 2011 Phys. Rev. D 84 022003
[9]Jiang C and Feng X S 2012 Sol. Phys. 281 621
[10]Parker E N 1958 Astrophys. J. 128 664
[11]Thebault E et al 2015 Earth Planets Space 67 79
[12]Li Y Y et al 2013 Acta Seismologica Sin. 35 125
[13]Amenomori M et al 2009 Astrophys. J. 692 61
[14]Zha M et al 2017 Astron. Part. Phys. 20 90
[15]Zha M 2012 Nucl. Instrum. Methods Phys. Res. Sect. A 692 77
[16]Amenomori M et al 2000 Astrophys. J. 541 1051
[17]Chen S and Nan Y 2017 PoS (35th ICRC) 041
Full text