402 citations · 1.8k across the 16 of their papers we have counts for
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Mean motion resonances from planet-planet scattering
Sean N. Raymond, Rory Barnes, Philip J. Armitage +1
Planet-planet scattering is the leading mechanism to explain the large eccentricities of the observed exoplanet population. However, scattering has not been considered important to…
Massive black hole binary mergers within sub-pc scale gas discs
J. Cuadra, P. J. Armitage, R. D. Alexander +1
[ABRIDGED] We study supermassive black hole binary mergers driven by angular momentum loss to small-scale gas discs. Such binaries form after major galaxy mergers, but their fate i…
Extrasolar Planet Eccentricities from Scattering in the Presence of Residual Gas Disks
Nickolas Moeckel, Sean N. Raymond, Philip J. Armitage
Gravitational scattering between massive planets has been invoked to explain the eccentricity distribution of extrasolar planets. For scattering to occur, the planets must either f…
Microphysical dissipation, turbulence and magnetic fields in hyper-accreting discs
Elena M. Rossi, Philip J. Armitage, Kristen Menou
Hyper-accreting discs occur in compact-object mergers and collapsars, and may power gamma-ray bursts (GRBs). We calculate the microscopic viscosity and resistivity of plasma in the…
Stellar dynamical evidence against a cold disc origin for stars in the Galactic Centre
Jorge Cuadra, Philip J. Armitage, Richard D. Alexander
Observations of massive stars within the central parsec of the Galaxy show that, while most stars orbit within a well-defined disc, a significant fraction have large eccentricities…