Supermassive Black Hole Winds in X-rays
Abstract
SUBWAYS (Supermassive Black HoleWinds in X-rays) is an international program designed to provide a unique observational framework to test the validity of physical models for Active Galactic Nuclei (AGN) outflows. Its ultimate goal is to understand the AGN impact onto their host galaxies.Within this framework, we have been awarded a Large Program of ~ 1.4 Ms with XMM-Newton in AO18, to observe a representative sample of 17 objects at z=0.1-0.5, above the knee of the AGN luminosity function with the main goal of obtaining a statistically sound estimate of the duty cycle and physical parameters of ultrafast outflows (UFOs). We present here the first results from the data reduction and analysis of the AO18 XMMNewton datasets. By performing a statistically driven blind line-search coupled with extensive Monte Carlo simulations, we find that absorption lines corresponding to highly ionized FeK xxv Heα and FeK xxvi Lyα, are detected in 7/17 sources at a PMC ≳ 90% significance level and hence corresponding to ~ 40% of the sample. The results of this work are consistent with those previously obtained in the local and high-z Universe, and independently provide a further support for the existence of highly ionised matter propagating at mildly relativistic speed (≳ 0:1c) in a considerable fraction of AGN in the intermediate Universe.
- Publication:
-
Memorie della Societa Astronomica Italiana
- Pub Date:
- November 2022
- DOI:
- 10.36116/MEMSAIT_93N2_3.2022.6
- Bibcode:
- 2022MmSAI..93b..48B
- Keywords:
-
- Galaxies: active;
- Quasars: X-rays