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On the Detection of Supermassive Primordial Stars
Marco Surace, Daniel J. Whalen, Tilman Hartwig +6
The collapse of supermassive primordial stars in hot, atomically-cooled halos may have given birth to the first quasars at 15 - 20. Recent numerical simulations of these r…
Three-Dimensional Simulations of Neutrino-Driven Core-Collapse Supernovae from Low-Mass Single and Binary Star Progenitors
B. Müller, T. M. Tauris, A. Heger +6
We present a suite of seven 3D supernova simulations of non-rotating low-mass progenitors using multi-group neutrino transport. Our simulations cover single star progenitors with z…
Titans of the Early Universe: The Prato Statement on the Origin of the First Supermassive Black Holes
Tyrone E. Woods, Bhaskar Agarwal, Volker Bromm +30
In recent years, the discovery of massive quasars at z~7 has provided a striking challenge to our understanding of the origin and growth of supermassive black holes in the early Un…
Neutrino Losses in Type I Thermonuclear X-ray Bursts: An Improved Nuclear Energy Generation Approximation
Adelle J. Goodwin, Alexander Heger, Duncan K. Galloway
Type I X-ray bursts are thermonuclear explosions on the surface of accreting neutron stars. Hydrogen rich X-ray bursts burn protons far from the line of stability and can release e…
Nucleosynthesis in Primordial Hypernovae
J. J. Grimmett, Alexander Heger, Amanda I. Karakas +1
We investigate the relationship between explosion energy and nucleosynthesis in Population III supernovae and provide nucleosynthetic results for the explosions of stars with proge…
-Process in Massive Carbon-Enhanced Metal-Poor Stars
Projjwal Banerjee, Yong-Zhong Qian, Alexander Heger
Observations suggest that the interstellar medium (ISM) might have been highly enriched in carbon at very early times. We explore nucleosynthesis in massive carbon-enhanced metal-p…
Multi-D Simulations of Ultra-Stripped Supernovae to Shock Breakout
B. Müller, D. Gay, A. Heger +2
The recent discoveries of many double neutron star systems and their detection as LIGO-Virgo merger events call for a detailed understanding of their origin. Explosions of ultra-st…
Role of core-collapse supernovae in explaining Solar System abundances of p nuclides
C. Travaglio, T. Rauscher, A. Heger +2
The production of the heavy stable proton-rich isotopes between 74Se and 196Hg -- the p nuclides -- is due to the contribution from different nucleosynthesis processes, activated i…