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
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
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
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;
Radiation Properties of the Accretion Disk around a Black Hole Surrounded by PFDM
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14091765
Abstract: The thermal radiation properties of the accretion disk around a non-rotating black hole with a perfect fluid dark matter (PFDM) environment are investigated. A non-rotating black hole surrounded by perfect fluid dark matter together with… read more here.
Keywords: perfect fluid; dark matter; disk; fluid dark ... See more keywords