Exploring accretion disk physics and black hole growth with regular monitoring of ultrafast active galactic nucleus winds
Sign Up to like & getrecommendations! Published in 2017 at "Astronomische Nachrichten"
DOI: 10.1002/asna.201713338
Abstract: Fifteen years of XMM-Newton observations have established that ultrafast highly ionized winds (UFOs) are common in radio-quiet active galactic nucleus (AGN). A simple theory of Eddington-limited accretion correctly predicts the typical velocity (∼0.1c) and high… read more here.
Keywords: active galactic; accretion; black hole; physics ... See more keywords
A study of thin relativistic magnetic accretion disk around a distorted black hole
Sign Up to like & getrecommendations! Published in 2025 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-025-04444-5
Abstract: Accretion disks, swirling structures of matter spiraling into black holes, play a pivotal role in our understanding of binary star systems and their intricate evolutionary processes. While current models often simplify these complex phenomena by… read more here.
Keywords: accretion; black hole; accretion disk; distorted black ... See more keywords
Co-precession of a curved jet and compact accretion disk in M87
Sign Up to like & getrecommendations! Published in 2024 at "Nature Astronomy"
DOI: 10.1038/s41550-025-02580-0
Abstract: Observational constraints on the configuration of the black hole (BH)–accretion disk–jet system are crucial to understanding BH spin, accretion disk physics and jet formation. The recently reported variation in the position angle of the M87… read more here.
Keywords: precession; compact accretion; jet; accretion ... See more keywords
Jet creation in post-AGB binaries: the circum-companion accretion disk around BD+46°442
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201731493
Abstract: Aims. We aim at describing and understanding binary interaction processes in systems with very evolved companions. Here, we focus on understanding the origin and determining the properties of the high-velocity outflow observed in one such… read more here.
Keywords: disk; jet; agb binaries; post agb ... See more keywords
Thin accretion disk onto slowly rotating black holes in Einstein-Æther theory
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2022/02/034
Abstract: The accretion disk is formed by particles moving in closed orbits around a compact object, whose physical properties and the electromagnetic radiation characteristics are determined by the space-time geometry around the compact object. In this… read more here.
Keywords: black holes; thin accretion; disk; einstein ther ... See more keywords
Geodesics, accretion disk, gravitational lensing, time delay, and effects on neutrinos induced by a non-commutative black hole
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2025/06/062
Abstract: This paper explores gravitational phenomena associated with a non-commutative black hole. Geodesic equations are derived, and a thin accretion disk is analyzed to model the black hole shadow image, considering an optically thin, radiating, and… read more here.
Keywords: gravitational lensing; commutative black; black hole; non commutative ... See more keywords
Shadow images of a rotating black hole in Kalb-Ramond gravity surrounded by the thin accretion disk
Sign Up to like & getrecommendations! Published in 2025 at "Chinese Physics C"
DOI: 10.1088/1674-1137/ae1aff
Abstract: We investigate the shadow image of rotating black holes in Kalb-Ramond gravity using backward ray-tracing techniques. We consider two primary emission models: a spherical source and a optically and geometrically thin accretion disk. The results… read more here.
Keywords: rotating black; kalb ramond; accretion disk;
On the torque exerted by a warped, magnetically threaded accretion disk
Sign Up to like & getrecommendations! Published in 2020 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/21/3/52
Abstract: Most astrophysical accretion disks are likely to be warped. In X-ray binaries, the spin evolution of an accreting neutron star is critically dependent on the interaction between the neutron star magnetic field and the accretion… read more here.
Keywords: magnetically threaded; disk; accretion; torque exerted ... See more keywords
A visual approach to global accretion disk instabilities
Sign Up to like & getrecommendations! Published in 2025 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staf1265
Abstract: For over 30 years, the Magneto-Rotational Instability has been accepted as the mechanism driving accretion disk turbulence. Its physical basis is well understood, where an interplay between centrifugal forces and magnetic tension transfers angular momentum between… read more here.
Keywords: field; disk; approach; accretion disk ... See more keywords
Connecting the X-ray properties of weak-line and typical quasars: testing for a geometrically thick accretion disk
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty1989
Abstract: We present X-ray and multiwavelength analyses of 32 weak emission-line quasars (WLQs) selected in a consistent and unbiased manner. New $Chandra$ 3.1-4.8 ks observations were obtained for 14 of these WLQs with C IV rest-frame… read more here.
Keywords: accretion disk; ray; typical quasars; line ... See more keywords
Thin accretion disk around the distorted Schwarzschild black hole
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.023002
Abstract: We construct the relativistic standard steady, optically thick, cold and geometrically thin accretion disk around a distorted Schwarzschild black hole. The distortion of this static and axially symmetric black hole solution, is connected to an… read more here.
Keywords: thin accretion; accretion disk; black hole;