Understanding AGN Winds: Mechanisms and Implications

Recent research by De-Fu Bu and Feng Yuan, titled "Wind from cold accretion flows," explores the mechanisms behind the generation and acceleration of winds from active galactic nuclei (AGN) accretion disks. The paper, submitted on September 3, 2024, focuses on two primary models: radiation line force-driven winds and magnetic-driven winds, both of which operate on the scale of the accretion disk.

The authors review the historical investigations into these mechanisms and present new findings related to ultra-fast outflows (UFOs) observed in hard X-ray bands, which are believed to originate directly from AGN accretion disks. The study also discusses the propagation of these winds on a larger scale, which is significant for understanding AGN wind feedback.

The implications of this research are notable for astrophysics, particularly in understanding how AGN winds can influence their surrounding environments and contribute to the feedback processes that regulate galaxy formation and evolution. The findings could enhance our comprehension of the role of AGN in the cosmic ecosystem, potentially affecting star formation rates and the distribution of matter in galaxies.

The paper can be cited as follows: Bu, D.-F., & Yuan, F. (2024). Wind from cold accretion flows. arXiv:2409.01664.