Results 41 to 50 of about 23,810 (131)
Universe, 2021 Double-spiral galaxies are common in the Universe. It is known that the logarithmic double spiral is a Maximum Entropy geometry in hyperbolic (flat) spacetime that well represents an idealised spiral galaxy, with its central supermassive black hole (SMBH)
Michael C. Parker, Chris Jeynes
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UNSTABLE DISKS AT HIGH REDSHIFT: EVIDENCE FOR SMOOTH ACCRETION IN GALAXY FORMATION
The Astrophysical Journal, 2009 ApJ Letters ...
Bournaud, Frederic, Elmegreen, Bruce G.
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SUSTAINING STAR FORMATION RATES IN SPIRAL GALAXIES: SUPERNOVA-DRIVEN TURBULENT ACCRETION DISK MODELS APPLIED TO THINGS GALAXIES [PDF]
The Astronomical Journal, 2010 Gas disks of spiral galaxies can be described as clumpy accretion disks without a coupling of viscosity to the actual thermal state of the gas. The model description of a turbulent disk consisting of emerging and spreading clumps (Vollmer & Beckert 2003) contains free parameters, which can be constrained by observations of molecular gas, atomic gas
Vollmer, B., Leroy, A.
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Influence of Black Hole Spin on the Shape of the Fe Kα Spectral Line: The Case of 3C 405
Open Astronomy, 2011 Here we analyze how the angular momenta (spins) of black holes in the centers of Active Galactic Nuclei (AGN) affect the shape of the FeK line emitted from their accretion disks.
Jovanović P. +2 more
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The Dark Disk of the Milky Way
, 2009 Massive satellite accretions onto early galactic disks can lead to the deposition of dark matter in disk-like configurations that co-rotate with the galaxy. This phenomenon has potentially dramatic consequences for dark matter detection experiments.
Bruch +15 more
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Properties of Galaxies with Counter-rotating Stellar Disks in the MaNGA Survey
The Astrophysical JournalThe gas accretion process can fuel both star formation and black hole activity, playing a critical role in galaxy evolution. The counter-rotating structures are believed to originate from gas accretion, serving as an ideal laboratory to study its impact ...
Min Bao +4 more
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The Astrophysical Journal, 2023 We perform 3D radiation hydrodynamic local shearing-box simulations to study the outcome of gravitational instability (GI) in optically thick active galactic nuclei (AGNs) accretion disks.
Yi-Xian Chen +3 more
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Ongoing Formation of Bulges and Black Holes in the Local Universe: New Insights from GALEX [PDF]
, 2006 We analyze a volume-limited sample of massive bulge-dominated galaxies with data from both the Sloan Digital Sky Survey and the Galaxy Evolution Explorer (GALEX) satellite.
Alex S. Szalay +27 more
core +3 more sources
OBSERVATIONAL EVIDENCE FOR YOUNG RADIO GALAXIES IS TRIGGERED BY ACCRETION DISK INSTABILITY [PDF]
The Astrophysical Journal, 2009 5 pages, 3 figures, accepted by ApJ Letter, emulateapj ...
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An Accretion Disk Model for the Innermost 200PC of the Galaxy [PDF]
International Astronomical Union Colloquium, 1994 AbstractWe demonstrate that it is possible to understand observed radial velocities of molecular clouds close to the Galactic Center as being due to motion of this material in an accretion disk. Our models indicate a stationary disk with a radial mass flow rate of 10-1.8 Mʘ/yr with a viscosity of 1.9 · 103 pc km/s at 100 pc from the Galactic Center and
W.J. Duschl, S.v. Linden, P.L. Biermann
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