82 citations · 82 across the 5 of their papers we have counts for
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Ultramassive Black Holes and the Three - Relations
Andrew King
I consider recent observations of ultramassive black holes. These appear to confirm theoretical predictions that the relation between central black hole mass and spheroid veloc…
The Rapidly--Changing Period of the QPE Source 1ES~1927+654
Andrew King
Several low--mass galaxy nuclei are observed to produce quasiperiodic eruptions (QPEs). Recently one of these systems, 1ES~1927+654, changed its quasiperiod drastically, from $\sim…
Joining the Dots: High Redshift Black holes
Andrew King
A recent paper (King, 2024) suggested that emission from the central supermassive black holes in high-redshift galaxies must be tightly collimated by the effects of partly expellin…
The Black-Hole Masses of High-Redshift QSOs
Andrew King
Observations of high-redshift quasars frequently promote suggestions of large black hole masses, whose presence so early in cosmic time is not easily explicable. I consider the par…