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Accretion Disks [PDF]

open access: yes, 1995
This is an introduction to accretion disk theory, with emphasis on aspects relevant for X-ray Binaries and Cataclysmic Variables. The text corrects some mistakes in an earlier version, which appeared in 'Lives of Neutron Stars', A. Alpar, \"U.
Spruit, H. C.
core   +7 more sources

Mass Accretion Rate of Rotating Viscous Accretion Flow [PDF]

open access: yesThe Astrophysical Journal, 2009
The mass accretion rate of transonic spherical accretion flow onto compact objects such as black holes is known as the Bondi accretion rate(Mdot_B), which is determined only by the density and the temperature of gas at the outer boundary.
Bisnovatyi-Kogan   +20 more
core   +2 more sources

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

The Relationship between Mg ii Broad Emission and Quasar Inclination Angle

open access: yesFrontiers in Astronomy and Space Sciences, 2017
Several observed spectral properties of quasars are believed to be influenced by quasar orientation. In this investigation we examine the effect of orientation on the Mg ii line located at 2,798 Å in a sample of 36 radio-loud quasars, with orientation ...
Conor Wildy, Bozena Czerny
doaj   +1 more source

Reference Array and Design Consideration for the Next-Generation Event Horizon Telescope

open access: yesGalaxies, 2023
We describe the process to design, architect, and implement a transformative enhancement of the Event Horizon Telescope (EHT). This program—the next-generation Event Horizon Telescope (ngEHT)—will form a networked global array of radio dishes capable of ...
Sheperd S. Doeleman   +28 more
doaj   +1 more source

Variability of the Accretion Stream in the Eclipsing Polar EP Dra [PDF]

open access: yes, 2003
We present the first high time resolution light curves for six eclipses of the magnetic cataclysmic variable EP Dra, taken using the superconducting tunnel junction imager S-Cam2.
Bridge, C. M.   +5 more
core   +3 more sources

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