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Foundations of Black Hole Accretion Disk Theory [PDF]

open access: yesLiving Reviews in Relativity, 2013
This review covers the main aspects of black hole accretion disk theory. We begin with the view that one of the main goals of the theory is to better understand the nature of black holes themselves.
P Chris Fragile
exaly   +5 more sources

Hoyle-Lyttleton Accretion onto Accretion Disks [PDF]

open access: yesPublications of the Astronomical Society of Japan, 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   +5 more sources

The role of island-arc oceanic, collisional and intraplate magmatism in the formation of continental crust in the Mongolia-Trasnbaikalia region: geostructural, geochronological and Sm-Nd isotope data

open access: yesГеодинамика 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
doaj   +1 more source

A Study on the Hysteresis Effect and Spectral Evolution in the Mini-Outbursts of Black Hole X-Ray Binary XTE J1550-564

open access: yesFrontiers in Astronomy and Space Sciences, 2021
One normal outburst and three mini-outbursts have been detected by Rossi X-ray Timing Explorer satellite after 2000 in the well-known black hole X-ray binary XTE J1550-564.
Ai-Jun Dong   +10 more
doaj   +1 more source

2200 million years of crustal evolution: The Baltic Shield [PDF]

open access: yesBulletin of the Geological Society of Finland, 1986
The crustal history of the Baltic shield is interpreted in the light of the plate tectonic concept. Five tectonic cycles, each characterized by special lithological and structural features, are distinguished: The Early Archean (> 2900 Ma), the Late ...
G. Gaál
doaj   +1 more source

A Brief Review on Primordial Black Holes as Dark Matter

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Primordial black holes (PBHs) represent a natural candidate for one of the components of the dark matter (DM) in the Universe. In this review, we shall discuss the basics of their formation, abundance and signatures.
Pablo Villanueva-Domingo   +2 more
doaj   +1 more source

The Radiative Transfer in Accretion Discs with Linear Plank Function: Role of Scattering Effect [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics, 2020
Radiative transfer in a geometrically thin accretion disc with fnite optical depth is considered under the plane-parallel approximation. The Eddington factor that is defned as the ratio of the mean intensity to radiation stress tensor, is assumed be ...
Fahimeh Habibi, Maryam Samadi
doaj   +1 more source

Physical and Social Factors of Shoreline Change in Gebang, Cirebon Regency 1915 – 2019

open access: yesJournal of Applied Geospatial Information, 2020
Shoreline changes are the main concern for coastal management. In Indonesia coastal zone is the populated region for marine and fishery economic sectors. Dynamic of the region shown by shoreline change.
Millary Agung Widiawaty   +2 more
doaj   +1 more source

Unveiling shoreline dynamics and remarkable accretion rates in Lake Eğirdir (Turkey) using DSAS. The implications of climate change on lakes

open access: yesTeMA: Journal of Land Use, Mobility and Environment, 2023
Lakes and their shorelines are important ecosystem areas with the diversity of living species they host. In addition, lakes are an almost indispensable resource for humans as a source of fresh water.
Gizem Dinç
doaj   +1 more source

Accretion onto Intermediate Mass Black Holes Regulated by Radiative Feedback I. Parametric Study for Spherically Symmetric Accretion [PDF]

open access: yes, 2011
We study the effect of radiative feedback on accretion onto intermediate mass black holes (IMBHs) using the hydrodynamical code ZEUS-MP with a radiative transfer algorithm.
Abel   +45 more
core   +1 more source

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