In Search of Cool Flow Accretion onto Galaxies: Where Does the Disk Gas End? [PDF]
The Astrophysical Journal, 2017 Abstract The processes taking place in the outermost reaches of spiral disks (the “protodisk”) are intimately connected to the build-up of mass and angular momentum in galaxies. The thinness of spiral disks suggests that the activity is mostly quiescent, and presumably this region is fed by cool flows coming into the halo from the ...
Joss Bland-Hawthorn +4 more
openaire +4 more sources
FORGE'd in FIRE III: The IMF in Quasar Accretion Disks from STARFORGE
The Open Journal of AstrophysicsRecently, we demonstrated self-consistent formation of strongly-magnetized quasar accretion disks (QADs) from cosmological radiation-magnetohydrodynamic-thermochemical galaxy-star formation simulations, including the full STARFORGE physics shown ...
Philip F. Hopkins +5 more
doaj +2 more sources
FORGE’d in FIRE II: The Formation of Magnetically-Dominated Quasar Accretion Disks from Cosmological Initial Conditions [PDF]
The Open Journal of Astrophysics, 2023 In a companion paper, we reported the self-consistent formation of quasar accretion disks with inflow rates $\sim 10\,{\rm M_{\odot}\,yr^{-1}}$ down ...
P. Hopkins +11 more
semanticscholar +1 more source
The Reliability of Accretion Disk Inclination Derived from X-Ray Spectroscopy of Active Galaxies
The Astrophysical JournalThe inclination angle of substructures in active galaxies gives insights into physical components from scales of the vicinity of the central black hole to the entire host galaxy. We use the self-consistent reflection spectral model RELXILL to measure the
Rong Du +3 more
doaj +4 more sources
Magnetic Reconnection and Hot Spot Formation in Black Hole Accretion Disks [PDF]
Astrophysical Journal, 2020 Hot spots, or plasmoids, which form due to magnetic reconnection in current sheets, are conjectured to power frequent X-ray and near-infrared flares from Sgr A*, the black hole in the center of our Galaxy.
B. Ripperda, F. Bacchini, A. Philippov
semanticscholar +1 more source
Disk Tearing: Implications for Black Hole Accretion and AGN Variability [PDF]
, 2021 Accretion disks around black holes power some of the most luminous objects in the universe. Disks that are misaligned to the black hole spin can become warped over time by Lense–Thirring precession.
A. Raj, C. Nixon
semanticscholar +1 more source
Gas infall and radial transport in cosmological simulations of milky way-mass disks [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Observations indicate that a continuous supply of gas is needed to maintain observed star formation rates in large, disky galaxies. To fuel star formation, gas must reach the inner regions of such galaxies.
Cameron W. Trapp +9 more
semanticscholar +1 more source
The Astrophysical Journal Supplement Series, 2023 The effects of metallicity on the evolution of protoplanetary disks may be studied in the outer Galaxy where the metallicity is lower than in the solar neighborhood.
Dominika Itrich +11 more
doaj +1 more source
Star formation and accretion in the circumnuclear disks of active galaxies [PDF]
Astronomy & Astrophysics, 2013 13 pages, 15 figures, 6 tables, accepted at A& ...
Wutschik, S. +2 more
openaire +3 more sources
Discriminating Accretion States via Rotational Symmetry in Simulated Polarimetric Images of M87 [PDF]
Astrophysical Journal, 2020 In 2017 April, the Event Horizon Telescope observed the shadow of the supermassive black hole at the core of the elliptical galaxy Messier 87. While the original image was constructed from measurements of the total intensity, full polarimetric data were ...
D. Palumbo, G. Wong, B. Prather
semanticscholar +1 more source