22 citations · 100 across the 10 of their papers we have counts for
9 papers
The nature of tilted supercritical accretion discs
P. Chris Fragile, Matthew J. Middleton, Brooks Brasseur +2
In this paper, we report on the first 3D general relativistic radiation magnetohydrodynamic simulations of large supercritical accretion discs that are tilted with respect to the b…
Misalignment of the Lense-Thirring precession by an accretion torque
D. A. Bollimpalli, J. Horák, W. Kluźniak +1
Orbiting matter misaligned with a spinning black hole undergoes Lense-Thirring precession, due to the frame-dragging effect. This phenomenon is particularly relevant for type-C QPO…
Solar evolution models with a central black hole
Earl P. Bellinger, Matt E. Caplan, Taeho Ryu +6
Hawking (1971) proposed that the Sun may harbor a primordial black hole whose accretion supplies some of the solar luminosity. Such an object would have formed within the first 1 s…
Effect of geometrically thin discs on precessing, thick flows: Relevance to type-C QPOs
D. A. Bollimpalli, P. C. Fragile, W. Kluźniak
Type-C quasi-periodic oscillations (QPOs) are the low-frequency QPOs most commonly observed during the hard spectral state of X-ray binary systems. The leading model for these QPOs…
Epicyclic frequencies of spheroidal stars with non-uniform density
D. A. Bollimpalli
We consider the gravitational potential of a rotating star with non-uniform density to derive the orbital and epicyclic frequencies of the particles orbiting the star. We assume th…
Magneto-rotational instability in magnetically polarized discs
Oscar M. Pimentel, P. Chris Fragile, F. D. Lora-Clavijo +2
The magneto-rotational instability (MRI) is the most likely mechanism for transportation of angular momentum and dissipation of energy within hot, ionized accretion discs. This ins…