γ噪Blazar天体的复合谱指数研究

A Study of the Broad-band Spectral Indeices of Gamma-ray-loud Blazars

收集了66个有γ射线噪的Blazar在高态下的多波段流量数据,研究了Blazar复合谱指数之间的相关性。分析了BL Lac天体和平谱射电类星体(FSRQs)复合谱指数之间的相关性。结果表明(1)高态下Blazar的复合谱指数与αr,ir与αir,γ、αr,ir与αo,γ、αr,o与αo,x、αr,o与αo,γ之间有强相关性,αr,x与αx,γ之间有强负相关性。(2)平谱射电类星体(FSRQs)在高态下αr,o与αo,x、αr,o与αo,γ有强相关性。(3)BL Lac天体在高态时αr,o与αo,γ之间有强相关性,αr,x与αx,γ、αir,x与αx,γ有强负相关性。(4)γ射线很可能产生于同步自康普顿(SSC)过程。

Using the broad-band spectral indeices of 66 gamma-ray-loud blazars in their high states, we studied the possible correlations between different broad-band spectral indeices. We also studied the possible correlations between different broad-band spectral indices of BL Lac objects and flat-spectrum radio quasars （FSRQs）, respectively. （1） Strong correlations were found betweenα αr,ir and αir,γ, between αr,ir and αo,γ between, αr.o and αo,x, and between αr,o and αγ in the high states for our blazar sample. （2） Strong anticorrelations were found between αr,x and αx,γ in the high states for our blazar sample. （3） For flat-spectrum radio quasars （FSRQs） strong correlations found between αr,o and αo,x and between αr,o and αo,γ in the high states. （4） For BL Lac objects strong correlations were found between αr,o and αo.γ, between αr,o and αo,γ and between αr,x and αx,γ in high states. （5） Beased on these results, we suggest that the γ-ray emission is probably from the Self-Compton process.