Publications (17)
The Mutual Interaction Between Population III Stars and Self-Annihilating Dark Matter
Athena Stacy, Andreas H. Pawlik, Volker Bromm +1
We use cosmological simulations of high-redshift minihalos to investigate the effect of dark matter annihilation (DMA) on the collapse of primordial gas. We numerically investigate…
Modeling the survival of Population III stars till present day
Jayanta Dutta, Sharanya Sur, Athena Stacy +1
Recent numerical simulations have suggested the probability of a fraction of the primordial stars being ejected from the cluster of their origin. We explore the possibility that so…
Gravitational Waves from the Remnants of the First Stars
Tilman Hartwig, Marta Volonteri, Volker Bromm +4
Gravitational waves (GWs) provide a revolutionary tool to investigate yet unobserved astrophysical objects. Especially the first stars, which are believed to be more massive than p…
Effect of Population III Multiplicity on Dark Star Formation
Athena Stacy, Andreas H. Pawlik, Volker Bromm +1
We numerically study the mutual interaction between dark matter (DM) and Population III (Pop III) stellar systems in order to explore the possibility of Pop III dark stars within t…
The First Stars: formation under cosmic ray feedback
Jacob A. Hummel, Athena Stacy, Volker Bromm
We explore the impact of a cosmic ray (CR) background generated by supernova explosions from the first stars on star-forming metal-free gas in a minihalo at . Starting fro…
The formation of the first galaxies and the transition to low-mass star formation
Thomas H. Greif, Dominik R. G. Schleicher, Jarrett L. Johnson +6
The formation of the first galaxies at redshifts z ~ 10-15 signaled the transition from the simple initial state of the universe to one of ever increasing complexity. We here revie…
Magnetic fields in the formation of the first stars.--II Results
Athena Stacy, Christopher F. McKee, Aaron T. Lee +2
Beginning with cosmological initial conditions at z=100, we simulate the effects of magnetic fields on the formation of Population III stars and compare our results with the predic…
Modeling the survival of Population III stars till present day
Jayanta Dutta, Sharanya Sur, Athena Stacy +1
Recent numerical simulations have suggested the probability of a fraction of the primordial stars to be ejected from the cluster of their origin. We explore the possibility that so…
Impact of Cosmic Rays on Population III Star Formation
Athena Stacy, Volker Bromm
We explore the implications of a possible cosmic ray (CR) background generated during the first supernova explosions that end the brief lives of massive Population III stars. We sh…
Building up the Population III initial mass function from cosmological initial conditions
Athena Stacy, Volker Bromm, Aaron T. Lee
We simulate the growth of a Population III stellar system, starting from cosmological initial conditions at z=100. We follow the formation of a minihalo and the subsequent collapse…
Rotation Speed of the First Stars
Athena Stacy, Volker Bromm, Abraham Loeb
We estimate the rotation speed of Population III (Pop III) stars within a minihalo at z ~ 20 using a smoothed particle hydrodynamics (SPH) simulation, beginning from cosmological i…
Constraining the Statistics of Population III Binaries
Athena Stacy, Volker Bromm
We perform a cosmological simulation in order to model the growth and evolution of Population III (Pop III) stellar systems in a range of host minihalo environments. A Pop III mult…
The First Stars: formation under X-ray feedback
Jacob A. Hummel, Athena Stacy, Myoungwon Jeon +2
We investigate the impact of a cosmic X-ray background (CXB) on Population III stars forming in a minihalo at . Using the smoothed particle hydrodynamics code GADGET-2,…
The First Stars: A Low-Mass Formation Mode
Athena Stacy, Volker Bromm
We perform numerical simulations of the growth of a Population III stellar system under photodissociating feedback. We start from cosmological initial conditions at z = 100, self-c…
Effect of Streaming Motion of Baryons Relative to Dark Matter on the Formation of the First Stars
Athena Stacy, Volker Bromm, Abraham Loeb
We evaluate the effect of a supersonic relative velocity between the baryons and dark matter on the thermal and density evolution of the first gas clouds at z < 50. Through a serie…
Probing Pre-galactic Metal Enrichment with High-Redshift Gamma-Ray Bursts
F. Y. Wang, Volker Bromm, Thomas H. Greif +4
We explore high-redshift gamma-ray bursts (GRBs) as promising tools to probe pre-galactic metal enrichment. We utilize the bright afterglow of a Pop III GRB exploding in a primordi…
Magnetic Fields in the Formation of the First Stars. I. Theory vs. Simulation
Christopher F. McKee, Athena Stacy, Pak Shing Li
While magnetic fields are important in contemporary star formation, their role in primordial star formation is unknown. Magnetic fields of order 10^-16 G are produced by the Bierma…