Results 21 to 30 of about 185,601 (365)
Galaxies, 2023 We study radio and X-ray emissions from intermediate-mass black holes (IMBHs) and explore the unified model for accretion and ejection processes. The radio band survey of IMBH (candidate) hosted galaxies indicates that only a small fraction (∼0.6%) of ...
Xiaolong Yang, Jun Yang
doaj +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
Литосфера, 2017 General positions on plate-tectonic metallogeny are presented and the grounds for singling out the metallogenic factors of orogenic systems are given. Mobilistic paradigma corresponds to the genotype of orogens and belts which being formed at the expense
Viktor M. Necheukhin, Elena N. Volchek
doaj +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
The distribution of accretion rates as a diagnostic of protoplanetary disc evolution [PDF]
, 2023 We show that the distribution of observed accretion rates is a powerful diagnostic of protoplanetary disc physics. Accretion due to turbulent ("viscous") transport of angular momentum results in a fundamentally different distribution of accretion rates than accretion driven by magnetised disc winds.
arxiv +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
On the Accretivity of the Inverse of an Accretive Relation [PDF]
Proceedings of the American Mathematical Society, 1977 If X is a smooth, reflexive, real Banach space such that a relation A in X × X X \times X is accretive iff A − 1 {A^{ - 1}} is accretive, then X is isomorphic to a Hilbert space.
openaire +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
Геодинамика и тектонофизика, 2021 The formation of continental crust in the Mongolia-Transbaikalia region is researched to identify the mechanisms of interactions between the crust and the mantle in the development of the Neoarchean, Proterozoic and Paleozoic magmatic and sedimentary ...
I. V. Gordienko
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