Evidence of an anisotropy in the arrival direction of cosmic rays with energies above 10<sup>19</sup> eV
D D Krasilnikov; A I Kuzmin; V A Orlov; J Linsley; R J O Reid; A A Watson; J G Wilson; D D Krasilnikov; Inst. Cosmophys. Res. & Aeronomy, Acad. Sci., Yakutsk, USSR; A I Kuzmin; Inst. Cosmophys. Res. & Aeronomy, Acad. Sci., Yakutsk, USSR; V A Orlov; Inst. Cosmophys. Res. & Aeronomy, Acad. Sci., Yakutsk, USSR; J Linsley; Inst. Cosmophys. Res. & Aeronomy, Acad. Sci., Yakutsk, USSR; R J O Reid; Inst. Cosmophys. Res. & Aeronomy, Acad. Sci., Yakutsk, USSR; A A Watson; Inst. Cosmophys. Res. & Aeronomy, Acad. Sci., Yakutsk, USSR; J G Wilson; Inst. Cosmophys. Res. & Aeronomy, Acad. Sci., Yakutsk, USSR
Журнал:
Journal of Physics A: Mathematical, Nuclear and General
Дата:
1974-12-11
Аннотация:
Evidence is presented that the arrival direction distribution of cosmic rays with energies above 10<sup>19</sup> eV is not isotropic. Harmonic analyses indicate that there is, prima facie, a first harmonic (amplitude=44%, chance probability=2.6%, phase (in right ascension)=13.3+or-1.5 h) at declinations above 0 degrees , and that there is a significant second harmonic (amplitude=101%, chance probability=0.2%, phase 7.8, 19.8+or-1 h) at declinations below -30 degrees . Supporting evidence from low energy data is also discussed.
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