47 citations · 103 across the 6 of their papers we have counts for
6 papers
Variability of black-hole accretion discs: a theoretical study
Barbara T. Ferreira
This thesis investigates phenomena occurring in black-hole accretion discs which are likely to induce high-frequency quasi-periodic variability. Two classes of pseudo-relativistic…
Excitation of Trapped Waves in Simulations of Tilted Black Hole Accretion Disks with Magnetorotational Turbulence
Ken B. Henisey, Omer M. Blaes, P. Chris Fragile +1
We analyze the time dependence of fluid variables in general relativistic, magnetohydrodynamic simulations of accretion flows onto a black hole with dimensionless spin parameter a/…
Warp and eccentricity propagation in discs around black holes
Barbara T. Ferreira, Gordon I. Ogilvie
We consider the inward propagation of warping and eccentric disturbances in discs around black holes under a wide variety of conditions. In our calculations we use secular theories…
Warped and eccentric discs around black holes
Gordon I. Ogilvie, Barbara T. Ferreira
Accretion discs around black holes in X-ray binary stars are warped if the spin axis of the black hole is not perpendicular to the binary orbital plane. They can also become eccent…
Excitation of trapped oscillations in discs around black holes
Barbara T. Ferreira, Gordon I. Ogilvie
High-frequency quasi-periodic oscillations detected in the light curves of black hole candidates can, according to one model, be identified with hydrodynamic oscillations of the ac…
On an excitation mechanism for trapped inertial waves in discs around black holes
Barbara T. Ferreira, Gordon I. Ogilvie
According to one model, high-frequency quasi-periodic oscillations (QPOs) can be identified with inertial waves, trapped in the inner regions of accretion discs around black holes…