4 papers
The Gamma-ray Burst Jet Energy Distribution Suggests A Quasi-universal, Weakly Magnetized Jet Evolving Over Cosmic Time
Nicole M. Lloyd-Ronning, Fabio De Colle, Gal Birenbaum +2
We present distributions of gamma-ray burst observed and inferred properties for those GRBs with redshifts. We show that the isotropic energy distribution, which spans over four or…
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…
White Dwarf-Black Hole Binary Progenitors of Low Redshift Gamma-ray Bursts
Nicole M. Lloyd-Ronning, Jarrett L. Johnson, Phoebe R. Upton Sanderbeck +2
Although there is strong evidence that many long GRBs are associated with the collapse of a massive star, tantalizing results in recent years have upended the direct association of…