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 …

The size-luminosity relation of local active galactic nuclei from interferometric observations of the broad-line region

A Amorim, G Bourdarot, W Brandner, Y Cao… - Astronomy & …, 2024 - aanda.org
By using the GRAVITY instrument with the near-infrared (NIR) Very Large Telescope
Interferometer (VLTI), the structure of the broad (emission-) line region (BLR) in active …

Supermassive Black Hole Winds in X-rays: SUBWAYS-I. Ultra-fast outflows in quasars beyond the local Universe

GA Matzeu, M Brusa, G Lanzuisi, M Dadina… - Astronomy & …, 2023 - aanda.org
We present a new X-ray spectroscopic study of 22 luminous (2× 10 45≲ L bol/erg s− 1≲ 2×
10 46) active galactic nuclei (AGNs) at intermediate redshifts (0.1≲ z≲ 0.4), as part of the …

The 1.5 Ms observing campaign on IRAS 13224− 3809–I. X-ray spectral analysis

J Jiang, ML Parker, AC Fabian… - Monthly Notices of …, 2018 - academic.oup.com
We present a detailed spectral analysis of the recent 1.5 Ms XMM–Newton observing
campaign on the narrow-line Seyfert 1 galaxy IRAS 13224− 3809, taken simultaneously with …

Multiphase powerful outflows detected in high-z quasars

G Chartas, M Cappi, C Vignali, M Dadina… - The Astrophysical …, 2021 - iopscience.iop.org
We present results from a comprehensive study of ultrafast outflows (UFOs) detected in a
sample of 14 quasars, 12 of which are gravitationally lensed, in a redshift range of 1.41 …

Scientific objectives of the Hot Universe Baryon Surveyor (HUBS) mission

J Bregman, R Cen, Y Chen, W Cui, T Fang… - Science China Physics …, 2023 - Springer
Abstract The Hot Universe Baryon Surveyor (HUBS) is a proposed space-based X-ray
telescope for detecting X-ray emissions from the hot gas content in our universe. With its …

Ultrafast outflows disappear in high-radiation fields

C Pinto, W Alston, ML Parker, AC Fabian… - Monthly Notices of …, 2018 - academic.oup.com
Ultrafast outflows (UFOs) are the most extreme winds launched by active galactic nuclei
(AGN) due to their mildly relativistic speeds (∼ 0.1–0.3 c) and are thought to significantly …

Searching for ultra-fast outflows in AGN using variability spectra

Z Igo, ML Parker, GA Matzeu, W Alston… - Monthly Notices of …, 2020 - academic.oup.com
We present a qualitative search for ultra-fast outflows (UFOs) in excess variance spectra of
radio-quiet active galactic nuclei (AGNs). We analyse 42 sources from the spectroscopic …

The nature of the extreme X-ray variability in the NLS1 1H 0707-495

ML Parker, WN Alston, L Härer, Z Igo… - Monthly Notices of …, 2021 - academic.oup.com
We examine archival XMM-Newton data on the extremely variable narrow-line Seyfert 1
active galactic nucleus (AGN) 1H 0707-495. We construct fractional excess variance (F var) …