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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…
Relativistic boost as the cause of periodicity in a massive black-hole binary candidate
Daniel J. D'Orazio, Zoltán Haiman, David Schiminovich
Because most large galaxies contain a central black hole, and galaxies often merge, black-hole binaries are expected to be common in galactic nuclei. Although they cannot be imaged…
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+…