Results 271 to 280 of about 151,210 (305)
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Astrophysics and Space Science, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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2000
Derivations are made for the mass and the mass-turnover time scale of an accretion disk as a function of the accretion rate, the observed disk radius, the non-viscous disk radius, and two parameters. These parameters depend on the effectiveness of viscosity and tidal angular momentum loss. Application is made to DQ Herculis.
Sparks, Warren M., Kutter, G.Siegfried
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Derivations are made for the mass and the mass-turnover time scale of an accretion disk as a function of the accretion rate, the observed disk radius, the non-viscous disk radius, and two parameters. These parameters depend on the effectiveness of viscosity and tidal angular momentum loss. Application is made to DQ Herculis.
Sparks, Warren M., Kutter, G.Siegfried
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Astrophysics and Space Science, 1983
A simple but sufficiently accurate method for calculating an accretion disk structure is developed. The detailed analysis of the accretion disk is fulfilled by using this method. The effect of turbulent heat transfer on the disk structure is taken into account along with the effect of radiative transfer.
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A simple but sufficiently accurate method for calculating an accretion disk structure is developed. The detailed analysis of the accretion disk is fulfilled by using this method. The effect of turbulent heat transfer on the disk structure is taken into account along with the effect of radiative transfer.
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Slender Fluxtubes in Accretion Disks
Space Science Reviews, 1994Some of the aspects of the dynamics of slender magnetic fluxtubes in a differentially rotating thin accretion disk are considered. The effect of Coriolis- and buoyancy forces on the added mass, and of radiation pressure are considered. The results are applied to a linear stability analysis for a circular fluxtube in the equatorial plane of the disk.
G. P. Schramkowski, A. Achterberg
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Periodic Orbits and Accretion Disks
Celestial Mechanics and Dynamical Astronomy, 1997The motion of a small particle in a binary system where the radiation pressure is not negligible is considered. The photogravitational three-body problem is used as a model of formation of a disc by accretion. The author generalizes the method of \textit{Paczyńsky} [Astrophys. J.
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Counterrotating Galaxies and Accretion Disks
Annals of the New York Academy of Sciences, 1998ABSTRACT:Theoretical interest in astrophysical disks with counterrotating components of stars and/or gas has been stimulated by recently discovered counterrotating spiral and S0 galaxies. A variety of physical processes can occur in counterrotating disks.
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Physics Today, 2017
Scientists generate an astrophysical plasma in the lab and cast doubt on a key assumption in x-ray emission models.
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Scientists generate an astrophysical plasma in the lab and cast doubt on a key assumption in x-ray emission models.
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Thin accretion disk in the Simpson-Visser black-bounce and wormhole spacetimes
Physical Review D, 2022Parth Bambhaniya, Pankaj S Joshi
exaly
2017
The chapter reviews the Novikov-Thorne model, which is the standard framework for geometrically thin and optically thick accretion disks around black holes, pointing out its assumptions. It also describes the transfer function for thin accretion disks and how the transfer function can be calculated in a stationary and axisymmetric spacetime and in the ...
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The chapter reviews the Novikov-Thorne model, which is the standard framework for geometrically thin and optically thick accretion disks around black holes, pointing out its assumptions. It also describes the transfer function for thin accretion disks and how the transfer function can be calculated in a stationary and axisymmetric spacetime and in the ...
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Neutrino Fast Flavor Conversions in Neutron-Star Postmerger Accretion Disks
Physical Review Letters, 2021exaly