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The prospects of finding the first quasars in the universe
Dominik R. G. Schleicher, Marco Spaans, Ralf S. Klessen
We study the prospects of finding the first quasars in the universe with ALMA and JWST. For this purpose, we derive a model for the high-redshift black hole population based on obs…
The Clustering Behavior of Pre-Main Sequence Stars in NGC 346 in the Small Magellanic Cloud
S. Schmeja, D. A. Gouliermis, R. S. Klessen
We present evidence that the star-forming region NGC 346/N66 in the Small Magellanic Cloud is the product of hierarchical star formation, probably from more than one star formation…
Is the Scaling of Supersonic Turbulence Universal?
Wolfram Schmidt, Christoph Federrath, Ralf Klessen
The statistical properties of turbulence are considered to be universal at sufficiently small length scales, i. e., independent of boundary conditions and large-scale forces acting…
Algorithmic comparisons of decaying, isothermal, supersonic turbulence
S. Kitsionas, C. Federrath, R. Klessen +10
Contradicting results have been reported in the literature with respect to the performance of the numerical techniques employed for the study of supersonic turbulence. We aim at ch…
Star Formation at Very Low Metallicity. V. The Greater Importance of Initial Conditions Compared to Metallicity Thresholds
A. -K. Jappsen, M. -M. Mac Low, S. C. O. Glover +2
The formation of the first stars out of metal-free gas appears to result in stars at least an order of magnitude more massive than in the present-day case. We here consider what co…
Cosmic constraints rule out s-wave annihilation of light dark matter
Dominik R. G. Schleicher, Simon C. O. Glover, Robi Banerjee +1
Light dark matter annihilating into electron-positron pairs emits a significant amount of internal bremsstrahlung that may contribute to the cosmic gamma-ray background. The amount…