Accretion Disc Thermal Reverberation in the Lamp Post Geometry
Proceedings, 2019 We present results regarding the disc response functions and the corresponding time lags assuming a standard Novikov--Thorne accretion disc illuminated by a point-like X-ray source.
Iossif E. Papadakis +2 more
doaj +1 more source
FRB as products of accretion disc funnels [PDF]
, 2017 The repeating FRB 121102, the only FRB with an accurately determined position, is associated with a variable persistent radio source consistent with a low luminosity active galactic nucleus.
J. Katz
semanticscholar +1 more source
Dynamic processes during accretion into a black hole
Discrete Dynamics in Nature and Society, 2001 Accretion disc theory was first developed as a theory with the local heat balance, where the whole energy produced by a viscous heating was emitted to the sides of the disc.
G. S. Bisonvatyi-kogan
doaj +1 more source
Disc tearing and Bardeen–Petterson alignment in GRMHD simulations of highly tilted thin accretion discs [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Luminous active galactic nuclei and X-ray binaries often contain geometrically thin, radiatively cooled accretion discs. According to theory, these are – in many cases – initially highly misaligned with the black hole equator.
M. Liska +7 more
semanticscholar +1 more source
Propeller outflows from an MRI disc [PDF]
, 2013 We present the results of axisymmetric simulations of MRI-driven accretion onto a rapidly rotating, magnetized star accreting in the propeller regime.
Koldoba, Alexander V. +4 more
core +1 more source
The star formation history and accretion-disc fraction among the K-type members of the Scorpius–Centaurus OB association [PDF]
, 2016 We present results of a spectroscopic survey for new K- and M-type members of Scorpius-Centaurus (Sco-Cen), the nearest OB Association (~100-200 pc). Using an X-ray, proper motion and color-magnitude selected sample, we obtained spectra for 361 stars ...
M. Pecaut, E. Mamajek
semanticscholar +1 more source
3D modelling of accretion disc in eclipsing binary system V1239 Her [PDF]
, 2017 We present the results of 3D-hydrodynamical simulations of accretion flow in the eclipsing dwarf nova V1239 Her in quiescence. The model includes the optical star filling its Roche lobe, a gas stream emanating from the inner Lagrangian point of the ...
V. Lukin +5 more
semanticscholar +1 more source
Bondi–Hoyle–Lyttleton accretion in supergiant X-ray binaries: stability and disc formation [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We use 2D (axisymmetric) and 3D hydrodynamic simulations to study Bondi–Hoyle–Lyttleton accretion with and without transverse upstream gradients. We mainly focus on the regime of high (upstream) Mach number, weak upstream gradients, and small accretor ...
Wenrui Xu, J. Stone
semanticscholar +1 more source
Accretion disc particle accretion in major merger simulations [PDF]
Monthly 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. We have extrapolated and adapted this approach to simulations of Milky Way-sized galaxy mergers containing black holes and explored the impact of the various ...
Wurster, James Howard +1 more
openaire +3 more sources
BEYOND THE STANDARD MODEL OF THE DISC–LINE SPECTRAL PROFILES FROM BLACK HOLE ACCRETION DISCS
Acta Polytechnica, 2014 The strong gravitational field of a black hole has distinct effects on the observed profile of a spectral line from an accretion disc near a black hole.
Vjaceslav Sochora +3 more
doaj +1 more source