THE ANISOTROPY OF COSMIC RAY PARTICLES IN THE ENERGY RANGE 10<SUP>11</SUP>—10<SUP>19</SUP>eV

XU Chun-Xian

Chinese Physics C> 1985, Vol. 9> Issue(4) : 385-390

THE ANISOTROPY OF COSMIC RAY PARTICLES IN THE ENERGY RANGE 10¹¹—10¹⁹eV

XU Chun-Xian ^,

Institute of High Energy Physics, Academia Sinica

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Abstract：
A study of the anisotropy of primary cosmic raya is presented. The expression of the anisotropy is derived in a model of statistical discrete sources in an infinite galaxy. Using these derived formulas, the amplitudes of the first harmonic anisotropies caused by eleven supernovea nearby the Earth are estimated individually and the trend of the resultant anisotropy is investigated. It is found that the expected results can account for the power law of E^0.5 of the anisotropy above the energy 5×10¹⁵eV. The Compton-Getting effect can cause an additional anisotropy which is independent of energy and added to the resultant anisotropy of these discrete sources. It is apparent that the anisotropies available in the low energy range 10¹¹—10¹⁴eV are caused by the Compton-Getting effect. Taking the differential spectrum index γ=2.67 mersured in the same energy bound we get the streaming velocity of 35km/s with respect to the cosmic ray background.

References

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XU Chun-Xian. THE ANISOTROPY OF COSMIC RAY PARTICLES IN THE ENERGY RANGE 10¹¹—10¹⁹eV[J]. Chinese Physics C, 1985, 9(4): 385-390.

XU Chun-Xian. THE ANISOTROPY OF COSMIC RAY PARTICLES IN THE ENERGY RANGE 10¹¹—10¹⁹eV[J]. Chinese Physics C, 1985, 9(4): 385-390. shu

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Received: 1900-01-01
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沈阳化工大学材料科学与工程学院沈阳 110142

THE ANISOTROPY OF COSMIC RAY PARTICLES IN THE ENERGY RANGE 10¹¹—10¹⁹eV

Corresponding author: XU Chun-Xian,

Institute of High Energy Physics, Academia Sinica

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1985-08-05

Abstract: A study of the anisotropy of primary cosmic raya is presented. The expression of the anisotropy is derived in a model of statistical discrete sources in an infinite galaxy. Using these derived formulas, the amplitudes of the first harmonic anisotropies caused by eleven supernovea nearby the Earth are estimated individually and the trend of the resultant anisotropy is investigated. It is found that the expected results can account for the power law of E^0.5 of the anisotropy above the energy 5×10¹⁵eV. The Compton-Getting effect can cause an additional anisotropy which is independent of energy and added to the resultant anisotropy of these discrete sources. It is apparent that the anisotropies available in the low energy range 10¹¹—10¹⁴eV are caused by the Compton-Getting effect. Taking the differential spectrum index γ=2.67 mersured in the same energy bound we get the streaming velocity of 35km/s with respect to the cosmic ray background.

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THE ANISOTROPY OF COSMIC RAY PARTICLES IN THE ENERGY RANGE 10¹¹—10¹⁹eV

THE ANISOTROPY OF COSMIC RAY PARTICLES IN THE ENERGY RANGE 10¹¹—10¹⁹eV