431 citations · 3.2k across the 62 of their papers we have counts for
10 papers · 1 filter
Post-periapsis pancakes: sustenance for self-gravity in tidal disruption events
Eric R. Coughlin, Chris Nixon, Mitchell C. Begelman +2
A tidal disruption event, which occurs when a star is destroyed by the gravitational field of a supermassive black hole, produces a stream of debris, the evolution of which ultimat…
Apsidal precession, disc breaking and viscosity in warped discs
Rebecca Nealon, Chris Nixon, Daniel J. Price +1
We demonstrate the importance of general relativistic apsidal precession in warped black hole accretion discs by comparing three - dimensional smoothed particle hydrodynamic simula…
AGN Flickering and Chaotic Accretion
Andrew King, Chris Nixon
Observational arguments suggest that the growth phases of the supermassive black holes in active galactic nuclei have a characteristic timescale yr. We show that this i…
Variability in tidal disruption events: gravitationally unstable streams
Eric R. Coughlin, Chris Nixon
We present simulations of the tidal disruption of a solar mass star by a black hole. These, for the first time, cover the full time evolution of the tidal disruptio…
Warp propagation in astrophysical discs
Chris Nixon, Andrew King
Astrophysical discs are often warped, that is, their orbital planes change with radius. This occurs whenever there is a non-axisymmetric force acting on the disc, for example the L…
Accretion disc viscosity: a limit on the anisotropy
Chris Nixon
Observations of warped discs can give insight into the nature of angular momentum transport in accretion discs. Only a few objects are known to show strong periodicity on long time…
Tearing up a misaligned accretion disc with a binary companion
Suzan Doğan, Chris Nixon, Andrew King +1
Accretion discs are common in binary systems, and they are often found to be misaligned with respect to the binary orbit. The gravitational torque from a companion induces nodal pr…
Resonances in retrograde circumbinary discs
Chris Nixon, Stephen H. Lubow
We analyse the interaction of an eccentric binary with a circular coplanar circumbinary disc that rotates in a retrograde sense with respect to the binary. In the circular binary c…
Misaligned gas discs around eccentric black-hole binaries and implications for the final-parsec problem
Hossam Aly, Walter Dehnen, Chris Nixon +1
We investigate the evolution of low mass (Md /Mb = 0.005) misaligned gaseous discs around eccentric supermassive black hole (SMBH) binaries. These are expected to form from randoml…
On the Bardeen-Petterson Effect in black hole accretion discs
Rebecca Nealon, Daniel Price, Chris Nixon
We investigate the effect of black hole spin on warped or misaligned accretion discs - in particular i) whether or not the inner disc edge aligns with the black hole spin and ii) w…