中国物理B ›› 2001, Vol. 10 ›› Issue (6): 568-574.doi: 10.1088/1009-1963/10/6/320
• • 上一篇
赵刚1, 张雄2, 郑广生3, 张力3, 谢光中4
Zhang Xiong (张雄)ab, Zhao Gang (赵刚)a, Xie Guang-zhong (谢光中)c, Zheng Guang-sheng (郑广生)d, Zhang Li (张力)d
摘要: We present a strong correlation of the gamma-ray (above 100 MeV) mean spectral indices αγ and X-ray (1 keV) mean spectral indices αX for 34 gamma-ray-loud blazars (16 BL Lac objects and 18 flat spectrum radio quasars). A strong correlation is also found between the gamma-ray flux densities Fγ and X-ray flux densities FX in the low state for 47 blazars (17 BL Lac and 30 flat spectrum radio quasars). Possible correlation on the gamma-ray emission mechanism is discussed. We suggest that the main gamma-ray radiation mechanism is probably the synchrotron process. The gamma-ray emission may be somewhat different from that of BL Lac objects and flat spectrum radio quasars.
中图分类号: (Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei))