O
Oliver Hahn
Researcher at Centre national de la recherche scientifique
Publications - 106
Citations - 7837
Oliver Hahn is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Dark matter & Halo. The author has an hindex of 36, co-authored 92 publications receiving 6798 citations. Previous affiliations of Oliver Hahn include SLAC National Accelerator Laboratory & University of Vienna.
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Earth-mass haloes and the emergence of NFW density profiles
TL;DR: In this article, the authors simulate neutralino dark matter (χDM) haloes from their initial collapse, at ∼ earth mass, up to a few percent solar, and confirm that the density profiles of the first haloes are described by a ∼r−1.5 power law.
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Rhapsody. I. Structural Properties and Formation History from a Statistical Sample of Re-simulated Cluster-size Halos
Hao-Yi Wu,Hao-Yi Wu,Hao-Yi Wu,Oliver Hahn,Oliver Hahn,Risa H. Wechsler,Risa H. Wechsler,Yao-Yuan Mao,Yao-Yuan Mao,Peter Behroozi,Peter Behroozi +10 more
TL;DR: In this article, the authors present the results from the Rhapsody cluster re-simulation project, a sample of 96 "zoom-in" simulations of dark matter halos of 10 14:8 0:05 h 1 M, selected from a 1 h 3 Gpc 3 volume.
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Virial scaling of galaxies in clusters: bright to faint is cool to hot
TL;DR: In this paper, galaxy tracers from high-resolution N-body and hydrodynamical simulations are combined to obtain a consistent picture of the behaviour of galaxy velocities in massive clusters.
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How closely do baryons follow dark matter on large scales
TL;DR: In this article, the authors investigate the large-scale clustering and gravitational interaction of baryons and dark matter over cosmic time using a set of collisionless N-body simulations.
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Cosmic web anisotropy is the primary indicator of halo assembly bias
TL;DR: In this paper, it was shown that the internal properties of dark matter haloes correlate with the large-scale halo clustering strength at fixed halo mass, and are also strongly affected by the local, non-linear cosmic web.