Line-driven winds from variable accretion discs

ABSTRACT We use numerical hydrodynamics simulations to study line-driven winds launched from an accreting α-disc. Building on previous work where the driving radiation field is static, we compute a time-dependent flux local, variable accretion rate of disc. find that prior establishment steady state in disc, variations $\sim 15{{\ \rm per\ cent}}$ disc luminosity correlate with ∼ 2–3 mass wind. After reached, when drop 3{{\ cent}}$, these correlations vanish as variability dominated by intrinsic winds. This especially evident lower runs higher due greater prevalence failed The changing occurs primarily formation clumps and voids near atmosphere propagate out into low velocity part flow, process can be influenced local intensity. By computing normalized standard deviation outflow, show impact outflow more visible at luminosity. However, absolute change increases larger for models luminosity-mass scaling relation becoming steeper. further discuss implications CVs AGN observational prospects.