摘要
使用最近期的ＥＧＲＥＴ／ＣＧＲＯｙ射线数据，确定出了中等银纬区（｜ｂ｜＝１０°－２０°）银河宇宙线与星际气体相互作用产生的ｙ射线的发射率ｑ／４π，其中采用了由ｙ射线数据本身来确定该发射率的方法；并由此获得了以银经为函数的不同能区的逆康普顿（ＩＣ）ｙ射线积分强度．在该银纬区，沿银经平均的ＩＣ微分强度可表为：ＩＩｃ（Ｅ）＝１．５８×１０－６Ｅ－２．０８±０．０６ｃｍ－２·ｓ－１·ｓｒ－１ＧｅＶ－１ｂ＝１０°－２０°；ＩＩｃ（Ｅ）＝２．０８×１０－６Ｅ－２．０３±０．０６ｃｍ－２·Ｓ－１·Ｓｒ－１ＧｅＶ－１，ｂ＝－２０°—－１０°，其中，能量Ｅ的范围为３０ＭｅＶ到４０００ＭｅＶ．
The gamma-ray emissivity q/4π of galactic cosmic rays interacting with inter-staller gases at medium-latitude(|b| = 10°- 20° )is determined by using recent EGRET data. Meanwhile the method to obtain the emissivity by gamma-ray data themselve is adopted,and then the inverse compton (IC ) integral intensities as a function of galactic longitude are obtained. The differential IC intensities averaged over all galactic longitudes can be expressed by IIC (E ) =1. 58 × 10-6E-2.08±0.06cm-2s-1sr-1 for b = 10°- 20°andIIC (E ) = 2.08 × 10-6E-2.03±0.06cm-2s-1sr-1 for b = - 20°- -10°,where the energy range is from 30 MeV to 4 GeV.
出处
《高能物理与核物理》
EI
CSCD
北大核心
1995年第11期974-979,共6页
High Energy Physics and Nuclear Physics
基金
云南省科委应用基础研究基金
