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A transition in circumbinary accretion discs at a binary mass ratio of 1:25
Daniel J. D'Orazio, Zoltan Haiman, Paul Duffell +2
We study circumbinary accretion discs in the framework of the restricted three-body problem (R3Bp) and via numerically solving the height-integrated equations of viscous hydrodynam…
A reduced orbital period for the supermassive black hole binary candidate in the quasar PG 1302-102?
Daniel J. D'Orazio, Zoltán Haiman, Paul Duffell +2
Graham et al. (2015) have detected a 5.2 year periodic optical variability of the quasar PG 1302-102 at redshift , which they interpret as the redshifted orbital period $(1+…
Massive Black Hole Science with eLISA
Enrico Barausse, Jillian Bellovary, Emanuele Berti +4
The evolving Laser Interferometer Space Antenna (eLISA) will revolutionize our understanding of the formation and evolution of massive black holes along cosmic history by probing m…
Binary Black Hole Accretion During Inspiral and Merger
Brian D. Farris, Paul Duffell, Andrew I. MacFadyen +1
We present the results of 2D, moving mesh, viscous hydrodynamical simulations of accretion onto merging supermassive black hole (SMBH) binaries. We include viscous heating, shock h…
Characteristic Signatures in the Thermal Emission from Accreting Binary Black Holes
Brian D. Farris, Paul Duffell, Andrew I. MacFadyen +1
We present the results of a calculation of the thermal spectrum from a 2D, moving mesh, high-accuracy, viscous hydrodynamical simulation of an accreting supermassive black hole bin…
Binary Black Hole Accretion From a Circumbinary Disk: Gas Dynamics Inside the Central Cavity
Brian D. Farris, Paul Duffell, Andrew I. MacFadyen +1
We present the results of 2D hydrodynamical simulations of circumbinary disk accretion using the finite-volume code DISCO. This code solves the 2D viscous Navier-Stokes equations o…
Binary Black-Hole Mergers in Magnetized Disks: Simulations in Full General Relativity
Brian D. Farris, Roman Gold, Vasileios Paschalidis +2
We present results from the first fully general relativistic, magnetohydrodynamic (GRMHD) simulations of an equal-mass black hole binary (BHBH) in a magnetized, circumbinary accret…
Binary black hole mergers in gaseous disks: Simulations in general relativity
Brian D. Farris, Yuk Tung Liu, Stuart L. Shapiro
Simultaneous gravitational and electromagnetic wave observations of merging black hole binaries (BHBHs) can provide unique opportunities to study gravitation physics, accretion and…
Binary Black Hole Mergers in Gaseous Environments: "Binary Bondi" and "Binary Bondi-Hoyle-Lyttleton" Accretion
Brian D. Farris, Yuk Tung Liu, Stuart L. Shapiro
Merging supermassive black hole-black hole (BHBH) binaries produced in galaxy mergers are promising sources of detectable gravitational waves. If such a merger takes place in a gas…