517 citations · 12.3k across the 161 of their papers we have counts for
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Importance of thermal diffusion in the gravo-magnetic limit cycle
James E. Owen, Philip J. Armitage
We consider the role of thermal diffusion due to turbulence and radiation on accretion bursts that occur in protoplanetary discs which contain dead zones. Using 1D viscous disc mod…
The Kozai-Lidov Mechanism in Hydrodynamical Disks
Rebecca G. Martin, Chris Nixon, Stephen H. Lubow +4
We use three dimensional hydrodynamical simulations to show that a highly misaligned accretion disk around one component of a binary system can exhibit global Kozai-Lidov cycles, w…
Giant Outbursts in Be/X-ray Binaries
Rebecca G. Martin, Chris Nixon, Philip J. Armitage +2
Be/X-ray binary systems exhibit both periodic (Type I) X-ray outbursts and giant (Type II) outbursts, whose origin has remained elusive. We suggest that Type II X-ray outbursts occ…
Distinguishing an ejected blob from alternative flare models at the Galactic centre with GRAVITY
F. H. Vincent, T. Paumard, G. Perrin +5
The black hole at the Galactic centre exhibits regularly flares of radiation, the origin of which is still not understood. In this article, we study the ability of the near-future…
Efficiency of Particle Trapping in the Outer Regions of Protoplanetary Disks
Jacob B. Simon, Philip J. Armitage
We investigate the strength of axisymmetric local pressure maxima (zonal flows) in the outer regions of protoplanetary disks, where ambipolar diffusion reduces turbulent stresses d…
A mechanism for hysteresis in black hole binary state transitions
Mitchell C. Begelman, Philip J. Armitage
We suggest that the hysteretic cycle of black hole state transitions arises from two established properties of accretion disks: the increase in turbulent stress in disks threaded b…