Results 21 to 30 of about 1,814 (268)
Accretion Disk Instabilities [PDF]
International Astronomical Union Colloquium, 1993 AbstractBasic properties of accretion disk instabilities are summarized. We first explain the standard disk model by Shakura and Sunyaev. In this model, the dominant sources of viscosity are assumed to be chaotic magnetic fields and turbulence in gas flow, and the magnitude of viscosity is prescribed by so-called a model. It is then possible to build a
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Accretion Disks in Algols [PDF]
International Astronomical Union Colloquium, 1989 AbstractBasic theoretical concepts concerning formation and properties of disKs in close binary systems are reviewed and compared with observations of Algols.
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Accretion and structure of radiating disks [PDF]
Astronomy & Astrophysics, 2012 Changes according to the version accepted by Astronomy & ...
Mach, Patryk, Malec, Edward
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Accretion Disk Evolution [PDF]
International Astronomical Union Colloquium, 1987 AbstractThree aspects of mass transfer instability models of dwarf novae are examined. The hydrodynamic development of instabilities in the secondary are examined within Roche geometry and shown to extend at least a few degrees away from the line of centres.
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ON THE STRUCTURE OF ACCRETION DISKS WITH OUTFLOWS [PDF]
The Astrophysical Journal, 2011 24 pages, 20 figures.
Jiao, Cheng-Liang, Wu, Xue-Bing
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The Astrophysical Journal, 2023 We present global 3D radiation magnetohydrodynamic simulations of accretion onto a 6.62 solar-mass black hole, with quasi-steady-state accretion rates reaching 0.016–0.9 times the critical accretion rate, which is defined as the accretion rate for ...
Jiahui Huang +5 more
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“Dark Matter” in Accretion Disks [PDF]
The Astrophysical Journal, 2008 Using Spitzer Space Telescope photometric observations of the eclipsing, interacting binary WZ Sge, we have discovered that the accretion disk is far more complex than previously believed. Our 4.5 and 8 micron time series observations reveal that the well known gaseous accretion disk is surrounded by an asymmetric disk of dusty material with a radius ...
Howell, Steve B. +6 more
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On the Formation and Interaction of Multiple Supermassive Stars in Cosmological Flows
The Astrophysical Journal, 2023 Supermassive primordial stars with masses exceeding ∼10 ^5 M _⊙ that form in atomically cooled halos are the leading candidates for the origin of high-redshift quasars at z > 6.
Tyrone E. Woods +3 more
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On the role of $$\varLambda $$ on accretion disks [PDF]
The European Physical Journal Plus, 2021 Comment: 6 pages, 1 fig., Eur. Phys.
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ACCRETION INTO BLACK HOLES WITH MAGNETIC FIELDS, AND RELATIVISTIC JETS
Odessa Astronomical Publications, 2011 We discuss the problem of the formation of a large-scale magnetic field in the accretion disks around black holes, taking into account the non-uniform vertical structure of the disk.
G. S. Bisnovatyi-Kogan +2 more
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