Results 11 to 20 of about 40,120 (302)
Dynamic processes during accretion into a black hole
Discrete Dynamics in Nature and Society, 2001 Accretion disc theory was first developed as a theory with the local heat balance, where the whole energy produced by a viscous heating was emitted to the sides of the disc.
G. S. Bisonvatyi-kogan
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Propeller outflows from an MRI disc [PDF]
, 2013 We present the results of axisymmetric simulations of MRI-driven accretion onto a rapidly rotating, magnetized star accreting in the propeller regime.
Koldoba, Alexander V. +4 more
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Mass Flow and Accretion through gaps in Accretion Discs [PDF]
, 1998 We study the structure and dynamics of the gap created by a protoplanet in an accretion disc. The hydrodynamic equations for a flat, two-dimensional, non-selfgravitating protostellar accretion disc with an embedded, Jupiter sized protoplanet on a ...
Kley, Willy
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BEYOND THE STANDARD MODEL OF THE DISC–LINE SPECTRAL PROFILES FROM BLACK HOLE ACCRETION DISCS
Acta Polytechnica, 2014 The strong gravitational field of a black hole has distinct effects on the observed profile of a spectral line from an accretion disc near a black hole.
Vjaceslav Sochora +3 more
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MHD Simulations of Magnetized Stars in the Propeller Regime of Accretion
EPJ Web of Conferences, 2014 Accreting magnetized stars may be in the propeller regime of disc accretion in which the angular velocity of the stellar magnetosphere exceeds that of the inner disc.
Lii Patrick +2 more
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Flickering in CVs and Accretion Disc Viscosity
Acta Polytechnica CTU Proceedings, 2015 I review observational constraints on accretion disc viscosity inferred from changes of disc structure with time and from disc flickering distributions. The radial run of the disc viscosity parameter in four cases are presented and discussed.
R. Baptista
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3C 120 Disk/Corona vs. Jet Variability in X-rays
Universe, 2023 The 3C120 (Mrk 1506, UGC 03087, Mrk 9014) is a type 1 Seyfert (Sy1)/broad-line radio galaxy (BLRG) with intriguing variable jet activity featuring “dip” and “outburst” phases.
Elena Fedorova, Antonio Del Popolo
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Dead discs, unstable discs and the stars they surround
EPJ Web of Conferences, 2014 Strong stellar magnetic fields significantly alter the behaviour of surrounding accretion discs. Recent work has demonstrated that at low accretion rates a large amount of mass can remain confined in the disc, contrary to the standard assumption that the
D’Angelo Caroline
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Magnetic field structure in accretion columns on HMXB and effects on CRSF
EPJ Web of Conferences, 2014 In accreting neutron star binaries, matter is channelled by the magnetic fields from the accretion disc to the poles of neutron stars forming an accretion mound.
Mukherjee Dipanjan +2 more
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Fate of an accretion disc around a black hole when both the viscosity and dark energy is in effect
European Physical Journal C: Particles and Fields, 2017 This paper deals with the viscous accretion flow of a modified Chaplygin gas towards a black hole as the central gravitating object. A modified Chaplygin gas is a particular type of dark energy model which mimics of radiation era to phantom era depending
Sandip Dutta, Ritabrata Biswas
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