246 citations · 3.8k across the 56 of their papers we have counts for
56 papers
On the Anti-Correlation between Duration and Redshift in Gamma-ray Bursts
Nicole M. Lloyd-Ronning, Jarrett L. Johnson, Roseanne M. Cheng +4
For gamma-ray bursts (GRBs) with durations greater than two seconds (so-called long GRBs), the intrinsic prompt gamma-ray emission appears, on average, to last longer for bursts at…
A Simple Condition for Sustained Super-Eddington Black Hole Growth
Jarrett Lawrence Johnson, Phoebe R. Upton Sanderbeck
One of the most pressing questions in cosmology is how the black holes (BHs) powering quasars at high redshift grow to supermassive scales within a billion years of the Big Bang. H…
Properties of High-Redshift GRBs
Chris L. Fryer, Amy Y. Lien, Andrew Fruchter +5
The immense power of gamma-ray bursts (GRBs) make them ideal probes of the early universe. By using absorption lines in the afterglows of high-redshift GRBs, astronomers can study…
The Consequences of Gamma-ray Burst Jet Opening Angle Evolution on the Inferred Star Formation Rate
Nicole M. Lloyd-Ronning, Jarrett L. Johnson, Aycin Aykutalp
Gamma-ray burst (GRB) data suggest that the jets from GRBs in the high redshift universe are more narrowly collimated than those at lower redshifts. This implies that we detect rel…
The Evolution of Gamma-ray Burst Jet Opening Angle through Cosmic Time
Nicole Lloyd-Ronning, Valeria U. Hurtado, Aycin Aykutalp +2
Jet opening angles of long gamma-ray bursts (lGRBs) appear to evolve in cosmic time, with lGRBs at higher redshifts being on average more narrowly beamed than those at lower redshi…
Induced metal-free star formation around a massive black hole seed
Aycin Aykutalp, Kirk S. S. Barrow, John H. Wise +1
The direct formation of a massive black hole is a potential seeding mechanism of the earliest observed supermassive black holes. We investigate how the existence of a massive black…