Results 21 to 30 of about 720 (206)
Jet Formation in 3D GRMHD Simulations of Bondi–Hoyle–Lyttleton Accretion
The Astrophysical Journal, 2023 A black hole (BH) traveling through a uniform, gaseous medium is described by Bondi–Hoyle–Lyttleton (BHL) accretion. If the medium is magnetized, then the black hole can produce relativistic outflows.
Nicholas Kaaz +4 more
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Stability of an ionization front in Bondi accretion [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Spherical Bondi accretion is used in astrophysics as an approximation to investigate many types of accretion processes. Two-phase accretion flows that transition from neutral to ionized have observational support in high-mass star formation, and have application to accretion flows around any ionizing source, but the hydrodynamic
Eric Keto, Rolf Kuiper
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Bondi accretion in trumpet geometries [PDF]
Classical and Quantum Gravity, 2017 The Bondi solution, which describes the radial inflow of a gas onto a non-rotating black hole, provides a powerful test for numerical relativistic codes. However, the Bondi solution is usually derived in Schwarzschild coordinates, which are not well suited for dynamical spacetime evolutions.
Miller, August J., Baumgarte, Thomas W.
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RADIATIVELY EFFICIENT MAGNETIZED BONDI ACCRETION [PDF]
The Astrophysical Journal, 2011 We have carried out a numerical study of the effect of large scale magnetic fields on the rate of accretion from a uniform, isothermal gas onto a resistive, stationary point mass. Only mass, not magnetic flux, accretes onto the point mass. The simulations for this study avoid complications arising from boundary conditions by keeping the boundaries far ...
Cunningham, A. J. +4 more
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On the polytropic Bondi accretion in two-component galaxy models with a central massive BH [PDF]
, 2022 In many investigations involving accretion on a central point mass, ranging from observational studies to cosmological simulations, including semi-analytical modelling, the classical Bondi accretion theory is the standard tool widely adopted.
Mancino A., Pellegrini S., Ciotti L.
core +1 more source
Self-interacting dark scalar spikes around black holes via relativistic Bondi accretion
, 2023 We consider the spike mass density profile in a dark halo by self-consistently solving the relativistic Bondi accretion of dark matter onto a non-spining black hole of mass M.
Wei-Xiang Feng; Alessandro Parisi; Chian-Shu Chen; Feng-Li Lin
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A generalized Bondi accretion model for the galactic centre [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 We develop an analytic, steady-state model for the gas environment in quiescent galactic nuclei. We assume that the mass is constantly supplied by a spherically symmetric distribution of wind emitting stars, and that gravity is solely due to a central supermassive black hole.
A Yalinewich +4 more
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Spherical Bondi Accretion onto a Magnetic Dipole [PDF]
The Astrophysical Journal, 1999 15 pages, 15 figures, used emulapj ...
Toropin, Yu. M. +5 more
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Bondi on spherically symmetric accretion [PDF]
Astronomy & Geophysics, 2020 AbstractPhilip J Armitage discusses the influence of Hermann Bondi's 1952 Monthly Notices paper on the treatment of a deceptively simple astrophysical process as it continues to inform our understanding of stars and black holes.
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Bondi Accretion in the Early Universe [PDF]
The Astrophysical Journal, 2007 This paper presents a study of quasi-steady spherical accretion in the early Universe, before the formation of the first stars and galaxies. The main motivation is to derive the basic formulas that will be used in a companion paper to calculate the accretion luminosity of primordial black holes and their effect on the cosmic ionization history.
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