摘要
根据吸积盘的理论,本文对几个已观测到大振幅、短时标光变的BL Lac天体的质量及辐射区域进行了估计。结果表明,观测与吸积盘理论是吻合的。
The light curves of short timescale variations have been observed for four BL Lac objects. Using these observational data and the accretion disk theory, we propose a method to determine the masses and sizes of the regions which provide the emission. The results are:M = 1.6 × 107M ⊙, R = 6.6 × 1014cm for Mark 421; M = 2.07 × 107M⊙, R = 1.10 × 1015cm for IE0317 + 186; M = 1.09 × 107M⊙, R = 4.0 × 1014cm for ON + 231; and M = 1.0 × 107M⊙, R = 3.2 × 1011cm for BL Lac.
