Systematic Research of Irradiation in Accretion Disks

我们研究了吸积盘在中心物体和/或吸积盘本身的照射下所受到的各种影响。以下是我们的主要结果。(1)康普顿阻力的影响：当气体光学较薄时，气体的角动量通过辐射场的康普顿阻力被去除。这是一种新型的驱动机制，我们称之为“吸积盘”。（ii）我们通过与原行星盘、x射线恒星和agn的关系研究了这种β盘的结构和演化。（iii）我们还计算了被中心区域辐射的（相对论性）吸积盘的发射光谱。光谱发生了显著的变化。（iv）为了解释x射线新星的电子-正电子对湮灭线，我们建立了吸积盘风的模型，并计算了线发射光谱。

We examined the various effects which an accretion disk suffered from irradiation by the central object and/or accretion disk itself. The followings are our main results.(i) The effect of the Compton drag : The angular momentum of the gas is removed via the Compton drag of the radiation fields when the gas is optically thin. This is the new type driving mechanism, we call it the 'beta accretion disk' .(ii) We examined the structure and evolution of such a beta disk in relation to protoplanetary disks, X-ray stars, and AGNs.(iii) We also calculated the emission spectrum from the (relativistic) accretion disk which is irradiated by the central region. The spectrum is remarkably modified.(iv) In order to explain the electron-positron pair annihilation line in X-ray nova, we constructed the model of an accretion disk wind blown off from the disk and calculated the line-emission spectrum.