宇宙微波背景辐射对超高能宇宙线流强的影响

Effect of the cosmic microwave background Radiation to the flux of the Superhigh Energetic Cosmic Ray

文章指出 :(1 )在 E=5× 1 0 1 9e V附近 ,对所有 x(x是宇宙线飞行的距离 ) ,超高能宇宙线流强略有增强 ;(2 )在 1 .0× 1 0 2 0 e V≤ E≤ 5.0× 1 0 2 4e V能区内 ,宇宙微波背景辐射的作用仅使超高能宇宙线流强有所减弱 ,在 x≤ 2 0 0 0 Mpc区域内 ,减弱系数 F(X,E)≡ j(x,E) /j(0 ,E)≥ 0 .34。

This paper show: (1) The flux of the superhigh energetic cosmic ray slightly rises near E=5×10 19 eV for all x; (2) In 1.0×10 20 eV≤E≤5×10 24 eV, the effect of the cosmic microwave background radiation only weakens the flux of the superhigh energetic cosmic ray and the reduced coefficient F(x,E)≡j(x,E)/j(0,E)≥0.34 in X≤2000Mpc.