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The Influence of Black Hole Binarity on Tidal Disruption Events
Eric R. Coughlin, Philip J. Armitage, Giuseppe Lodato +1
Mergers are fundamental to the standard paradigm of galaxy evolution, and provide a natural formation mechanism for supermassive black hole binaries. The formation process of such…
Galactic chimney sweeping: the effect of 'gradual' stellar feedback mechanisms on the evolution of dwarf galaxies
L. Garratt-Smithson, G. A. Wynn, C. Power +1
We investigate the impact of time-resolved `gradual' stellar feedback processes in high redshift dwarf spheroidal galaxies. Here `gradual' feedback refers to individual stellar fee…
Partial Stellar Disruption by a Supermassive Black Hole: Is the Lightcurve Really Proportional to ?
Eric R. Coughlin, C. J. Nixon
The tidal disruption of a star by a supermassive black hole, and the subsequent accretion of the disrupted debris by that black hole, offers a direct means to study the inner regio…
The origin of the structure of large-scale magnetic fields in disc galaxies
C. J. Nixon, T. O. Hands, A. R. King +1
The large-scale magnetic fields observed in spiral disc galaxies are often thought to result from dynamo action in the disc plane. However, the increasing importance of Faraday dep…
Dynamical Properties of Eccentric Nuclear Disks: Stability, Longevity, and Implications for Tidal Disruption Rates in Post-Merger Galaxies
Ann-Marie Madigan, Andrew Halle, Mackenzie Moody +3
In some galaxies, the stars orbiting the supermassive black hole take the form of an eccentric nuclear disk, in which every star is on a coherent, apsidally-aligned orbit. The most…
Exploring accretion disc physics and black hole growth with regular monitoring of ultrafast AGN winds
Ken Pounds, Andrew Lobban, Chris Nixon
15 years of XMM-Newton observations have established that ultra-fast, highly ionized winds are common in radio-quiet AGN. A simple theory of Eddington-limited accretion correctly p…
Tidal disruption events from supermassive black hole binaries
Eric R. Coughlin, Philip J. Armitage, Chris Nixon +1
We investigate the pre-disruption gravitational dynamics and post-disruption hydrodynamics of the tidal disruption of stars by supermassive black hole (SMBH) binaries. We focus on…
The final parsec problem: aligning a binary with an external accretion disc
Chris Nixon, Andrew King, Jim Pringle
We consider the interaction between a binary system (e.g. two supermassive black holes or two stars) and an external accretion disc with misaligned angular momentum. This situation…