199 citations · 478 across the 16 of their papers we have counts for
16 papers
Calculating Quasi-Normal Modes of Schwarzschild Black Holes with Physics Informed Neural Networks
Nirmal Patel, Aycin Aykutalp, Pablo Laguna
Machine learning, particularly neural networks, has rapidly permeated most activities and work where data has a story to tell. Recently, deep learning has started to be used for so…
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…
Outflows from inflows: the nature of Bondi-like accretion
Tim Waters, Aycin Aykutalp, Daniel Proga +3
The classic Bondi solution remains a common starting point both for studying black hole growth across cosmic time in cosmological simulations and for smaller scale simulations of A…
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…
On the Cosmological Evolution of Long Gamma-ray Burst Properties
Nicole M. Lloyd-Ronning, Aycin Aykutalp, Jarrett Johnson
We examine the relationship between a number of long gamma-ray burst (lGRB) properties (isotropic emitted energy, luminosity, intrinsic duration, jet opening angle) and redshift. W…
Observational signatures of massive black hole formation in the early universe
Kirk S. S. Barrow, Aycin Aykutalp, John H. Wise
Space telescope observations of massive black holes during their formation may be key to understanding the origin of supermassive black holes and high-redshift quasars. To create d…
Extreme Primordial Star Formation Enabled by High Redshift Quasars
Jarrett L. Johnson, Aycin Aykutalp
High redshift quasars emit copious X-ray photons which heat the intergalactic medium to temperatures up to 10 K. At such high temperatures the primordial gas will not fo…
First Light II: Emission Line Extinction, Population III Stars, and X-ray Binaries
Kirk S. S. Barrow, John H. Wise, Aycin Aykutalp +3
We produce synthetic spectra and observations for metal-free stellar populations and high mass X-ray binaries in the Renaissance Simulations at a redshift of 15. We extend our meth…
Outflow forces in intermediate mass star formation
T. A. van Kempen, M. R. Hogerheijde, E. F. van Dishoeck +22
Intermediate mass protostarsprovide a bridge between theories of low- and high-mass star formation. Emerging molecular outflows can be used to determine the influence of fragmentat…
Songlines from Direct Collapse Seed Black Holes: Effects of X-rays on Black Hole Growth and Stellar Populations
Aycin Aykutalp, John H. Wise, Marco Spaans +1
In the last decade, the growth of supermassive black holes (SMBHs) has been intricately linked to galaxy formation and evolution and is a key ingredient in the assembly of galaxies…
Can the intergalactic medium cause a rapid drop in Lyman alpha emission at z>6?
Andrei Mesinger, Aycin Aykutalp, Eros Vanzella +3
The large cross-section of the Lyman alpha (Lya) line makes it a sensitive probe of the ionization state of the intergalactic medium (IGM). Here we present the most complete study…
The Response of Metal Rich Gas to X-Ray Irradiation from a Massive Black Hole at High Redshift: Proof of Concept
A. Aykutalp, J. H. Wise, R. Meijerink +1
Observational studies show that there is a strong link between the formation and evolution of galaxies and the growth of supermassive black holes (SMBH) at their centers. However,…
Testing the Proposed Connection between Dark Energy and Black Holes
A. Aykutalp, M. Spaans
In 1997, an extension of general relativity was proposed that predicts the dark energy density Λ to vary linearly with the total number of macroscopic black holes in the universe.…
The complexity that the first stars brought to the Universe: Fragility of metal enriched gas in a radiation field
Aycin Aykutalp, Marco Spaans
The initial mass function (IMF) of the first (Population III) stars and Population II (Pop II) stars is poorly known due to a lack of observations of the period between recombinati…
The impact of metallicity and X-rays on star formation
Marco Spaans, Aycin Aykutalp, Seyit Hocuk
Star formation is regulated through a variety of feedback processes. In this study, we treat feedback by metal injection and a UV background as well as by X-ray irradiation. Our ai…