Results 11 to 20 of about 306,823 (323)

Accretion Disc Particle Accretion in Major Merger Simulations [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
A recent approach to simulating localized feedback from active galactic nuclei by Power et al. (2011) uses an accretion disc particle to represent both the black hole and its accretion disc.
Thacker, Rob J., Wurster, James
core   +3 more sources

ACCRETION [PDF]

open access: yes, 2014
Citation: 'accretion' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.A00058 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
  +8 more sources

Accrete, Accrete, Accrete… Bang! (and repeat): The remarkable Recurrent Novae [PDF]

open access: yesProceedings of The Golden Age of Cataclysmic Variables and Related Objects V — PoS(GOLDEN2019), 2021
All novae recur, but only a handful have been observed in eruption more than once. These systems, the recurrent novae (RNe), are among the most extreme examples of novae. RNe have long been thought of as potential type Ia supernova progenitors, and their claim to this 'accolade' has recently been strengthened. In this short review RNe will be presented
openaire   +2 more sources

Accretion–ablation mechanics

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2023
In this paper, we formulate a geometric nonlinear theory of the mechanics of accreting–ablating bodies. This is a generalization of the theory of accretion mechanics of Sozio & Yavari (Sozio & Yavari 2019 J. Nonlinear Sci. 29 , 1813–1863 (doi:10.1007/s00332-019-09531-w)).
Satya Prakash Pradhan, Arash Yavari
openaire   +3 more sources

Accreting white dwarf [PDF]

open access: yesProceedings of Supernovae: lights in the darkness — PoS(SUPERNOVA), 2008
Thermonuclear (type Ia) supernovae are explosions in accreting white dwarfs, but the exact scenario leading to these explosions is still unclear. An important step to clarify this point is to understand the behaviour of accreting white dwarfs in close binary systems.
Hernanz, Margarita, José, Jordi
openaire   +3 more sources

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

UV excess measures of accretion onto young very low-mass stars and brown dwarfs [PDF]

open access: yes, 2008
Low-resolution spectra from 3000-9000 AA of young low-mass stars and brown dwarfs were obtained with LRIS on Keck I. The excess UV and optical emission arising in the Balmer and Paschen continua yields mass accretion rates ranging from 2e-12 to 1e-8 Mo ...
Baraffe I.   +8 more
core   +2 more sources

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 Rates and the Accretion Efficiency in AGNs [PDF]

open access: yesPublications of the Astronomical Society of Japan, 2003
Abstract We used the standard geometrical-thin accretion theory to obtain the accretion rates in Seyfert 1 galaxies and quasars. Combining the accretion rates with the bolometric luminosity, we obtained the accretion efficiency. We found that most Seyfert 1 galaxies and radio-quiet quasars have lower accretion efficiencies, while most ...
Weihao, Bian, Yongheng, Zhao
openaire   +2 more sources

Phase-resolved optical and X-ray spectroscopy of low-mass X-ray binary X1822-371 [PDF]

open access: yes, 2012
(Abridged) X1822-371 is the prototypical accretion disc corona X-ray source, a low-mass X-ray binary viewed at very high inclination, thereby allowing the disc structure and extended disc coronal regions to be visible.
A. Somero   +38 more
core   +3 more sources

Home - About - Disclaimer - Privacy