3 papers · 1 filter
The Lifetimes of High-redshift Quasars Suggest Magnetic Disk Support
Jarrett Johnson, Phoebe Upton Sanderbeck, Nicole Lloyd-Ronning +2
It has recently been suggested that a variety of data on active galactic nuclei (AGN) can be explained if AGN disks are supported against gravitational fragmentation by magnetic fi…
Population III star formation near high-redshift active galactic nuclei
Ethan M. Fisk, Madeline A. Marshall, Phoebe R. Upton Sanderbeck +1
Using cosmological radiation-hydrodynamical simulations, we study the effect of accreting supermassive black holes (SMBHs) on nearby dark-matter (DM) haloes in the very early unive…
An Estimate of the Impact of Reionization on Supermassive Black Hole Growth
Phoebe R. Upton Sanderbeck, Jarrett L. Johnson, Madeline A. Marshall
The supermassive black holes (SMBHs) that power active galactic nuclei found at were formed during the epoch of reionization. Because reionization is an inhomogeneous proce…