Ionized outflows from active galactic nuclei as the essential elements of feedback

S Laha, CS Reynolds, J Reeves, G Kriss… - Nature …, 2021 - nature.com
Outflows from active galactic nuclei (AGNs) are one of the fundamental mechanisms by
which the central supermassive black hole interacts with its host galaxy. Detected in≥ 50 …

A global view of the inner accretion and ejection flow around super massive black holes-Radiation-driven accretion disk winds in a physical context

M Giustini, D Proga - Astronomy & Astrophysics, 2019 - aanda.org
Context. Understanding the physics and geometry of accretion and ejection around super
massive black holes (SMBHs) is important to understand the evolution of active galactic …

A disc wind model for blueshifts in quasar broad emission lines

JH Matthews, J Strong-Wright, C Knigge… - Monthly Notices of …, 2023 - academic.oup.com
Blueshifts–or, more accurately, blue asymmetries–in broad emission lines such as C iv
λ1550 are common in luminous quasars and correlate with fundamental properties such as …

Multiphase AGN winds from x-ray-irradiated disk atmospheres

T Waters, D Proga, R Dannen - The Astrophysical Journal, 2021 - iopscience.iop.org
The mechanism of thermal driving for launching mass outflows is interconnected with
classical thermal instability (TI). In a recent paper, we demonstrated that as a result of this …

An Obscured, Seyfert 2–like State of the Stellar-mass Black Hole GRS 1915+ 105 Caused by Failed Disk Winds

JM Miller, A Zoghbi, J Raymond… - The Astrophysical …, 2020 - iopscience.iop.org
We report on Chandra grating spectra of the stellar-mass black hole GRS 1915+ 105
obtained during a novel, highly obscured state. As the source entered this state, a dense …

A new emulated Monte Carlo radiative transfer disc-wind model: X-Ray Accretion Disc-wind Emulator – xrade

GA Matzeu, M Lieu, MT Costa… - Monthly Notices of …, 2022 - academic.oup.com
We present a new X-Ray Accretion Disc-wind Emulator (xrade) based on the 2.5 D Monte
Carlo radiative transfer code that provides a physically motivated, self-consistent treatment …

AGN STORM 2. III. A NICER view of the variable X-ray obscurer in Mrk 817

ER Partington, EM Cackett, E Kara… - The Astrophysical …, 2023 - iopscience.iop.org
Abstract The AGN STORM 2 Collaboration targeted the Seyfert 1 galaxy Mrk 817 for a year-
long multiwavelength, coordinated reverberation mapping campaign including Hubble …

The lively accretion disk in NGC 2992. III. Tentative evidence of rapid ultrafast outflow variability

A Luminari, A Marinucci, S Bianchi… - The Astrophysical …, 2023 - iopscience.iop.org
We report on the 2019 XMM-Newton+ NuSTAR monitoring campaign of the Seyfert galaxy
NGC 2992, observed at one of its highest flux levels in the X-rays. The time-averaged …

Dynamical thermal instability in highly supersonic outflows

T Waters, D Proga, R Dannen… - The Astrophysical …, 2022 - iopscience.iop.org
Acceleration can change the ionization of X-ray irradiated gas to the point that the gas
becomes thermally unstable. Cloud formation, the expected outcome of thermal instability …

Speed limits for radiation-driven SMBH winds

A Luminari, F Nicastro, M Elvis, E Piconcelli… - Astronomy & …, 2021 - aanda.org
Context. Ultra-fast outflows (UFOs) have become an established feature in analyses of the X-
ray spectra of active galactic nuclei (AGN). According to the standard picture, they are …