Results 1 to 10 of about 387,146 (299)
Hoyle-Lyttleton Accretion onto Accretion Disks [PDF]
Publ.Astron.Soc.Jap. 51 (1999) 151, 1999 We investigate Hoyle-Lyttleton accretion for the case where the central source is a luminous accretion disk. %In classical Hoyle-Lyttleton accretion onto a ``spherical'' source, accretion takes place in an axially symmetric manner around a so-called ...
Fukue, Jun, Ioroi, Masayuki
core +4 more sources
Hot Accretion Flows Around Black Holes [PDF]
, 2014 Black hole accretion flows can be divided into two broad classes: cold and hot. Whereas cold accretion flows consist of cool optically thick gas and are found at relatively high mass accretion rates, hot accretion flows, the topic of this review, are ...
F. Yuan, R. Narayan
semanticscholar +2 more sources
Accretion onto Planetary Mass Companions of Low-Mass Young Stars [PDF]
, 2014 Measurements of accretion rates onto planetary mass objects may distinguish between different planet formation mechanisms, which predict different accretion histories.
Cruz, Kelle +4 more
core +3 more sources
Formation of planetary systems by pebble accretion and migration [PDF]
Astronomy & Astrophysics, 2018 At least 30% of main sequence stars host planets with sizes of between 1 and 4 Earth radii and orbital periods of less than 100 days. We use N-body simulations including a model for gas-assisted pebble accretion and disk–planet tidal interaction to study
B. Bitsch +6 more
semanticscholar +1 more source
Accretion Dynamics on Wet Granular Materials. [PDF]
Physical Review Letters, 2017 Wet granular aggregates are common precursors of construction materials, food, and health care products. The physical mechanisms involved in the mixing of dry grains with a wet substrate are not well understood and difficult to control.
G. Saingier, A. Sauret, P. Jop
semanticscholar +1 more source
Advection-dominated Accretion: A Self-similar Solution [PDF]
, 1994 We consider viscous rotating accretion flows in which most of the viscously dissipated energy is stored as entropy rather than being radiated. Such advection-dominated flows may occur when the optical depth is either very small or very large. We obtain a
R. Narayan, I. Yi
semanticscholar +1 more source
Tectonic models for accretion of the Central Asian Orogenic Belt
Journal of the Geological Society, 2007 The Central Asian Orogenic Belt (c. 1000–250 Ma) formed by accretion of island arcs, ophiolites, oceanic islands, seamounts, accretionary wedges, oceanic plateaux and microcontinents in a manner comparable with that of circum-Pacific Mesozoic–Cenozoic ...
B. Windley +4 more
semanticscholar +1 more source
Circumbinary Disks: Accretion and Torque as a Function of Mass Ratio and Disk Viscosity [PDF]
Astrophysical Journal, 2019 Using numerical hydrodynamics calculations and a novel method for densely sampling parameter space, we measure the accretion and torque on a binary system from a circumbinary disk.
P. Duffell +6 more
semanticscholar +1 more source
Global Radiation Magnetohydrodynamic Simulations of sub-Eddington Accretion Disks around Supermassive Black Holes [PDF]
Astrophysical Journal, 2019 We conduct global three-dimensional radiation magnetohydrodynamic simulations of the inner regions of accretion flows around a 5 × 108M⊙ black hole, with mass accretion rates reaching 7% and 20% of the Eddington value.
Yan-Fei 飞姜 Jiang 燕 +3 more
semanticscholar +1 more source
Global long-term observations of coastal erosion and accretion
Scientific Reports, 2018 Changes in coastal morphology have broad consequences for the sustainability of coastal communities, structures and ecosystems. Although coasts are monitored locally in many places, understanding long-term changes at a global scale remains a challenge ...
L. Mentaschi +4 more
semanticscholar +1 more source