Large-scale Dynamics of Line-driven Winds with the Re-radiation Effect  

作　　者：Yi Zhu Jinsen Xie 

机构地区：[1]School of Nuclear Science and Technology,University of South China,Hengyang 421001,China

出　　处：《Research in Astronomy and Astrophysics》2023年第12期105-117,共13页天文和天体物理学研究（英文版）

摘　　要：Previous simulations studying winds only focus on the line force due to photons from central active galactic nuclei.What properties of the winds will be when including the re-radiation force due to the scattered and reprocessed photons(i.e.,the re-radiation effect)?We perform simulations to study the large-scale dynamics of accretion disk winds driven by radiation line force and re-radiation force.For the fiducial run,we find that the re-radiation force drives stronger outflows during the early stages.When the flows get into the steadiness,the UV radiation due to spectral lines dominates total radiation and the re-radiation effect could be negligible.The opening angle of winds narrows as the initial gas density increases.The larger the gas density is,the stronger the re-radiation effect will be.For MBH=10^(6)M_(⊙),ε=0.3,the outflows do become much stronger with the re-radiation effect and the winds still cannot escape from gravitational potential.We find that the detection probability of ultra-fast outflows and the properties of the winds are both consistent with the observations.

关 键 词：accretion-accretion disks-black hole physics-galaxies nuclei-stars winds-outflows 

分 类 号：P15[天文地球—天文学]