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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Cosmic rays and thermal instability in self-regulating cooling flows of massive galaxy clusters
R. S. Beckmann,Yohan Dubois,Alisson Pellissier,V. Olivares,F. L. Polles,Oliver Hahn,Pierre Guillard,Matthew J. Lehner +7 more
TL;DR: In this paper , the authors investigate how a fraction of the active galactic nucleus (AGN) energy is converted into cosmic rays (CRs), which provide non-thermal pressure support, and can retain energy even as thermal energy is radiated away.
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Physical and numerical stability and instability of AGN bubbles in a hot intracluster medium
TL;DR: In this article, the authors compare four hydrodynamical schemes in idealized simulations of a rising bubble inflated by AGN feedback in a hot stratified ICM: (traditional) smoothed particle hydrogynamics (TSPH), a pressure flavour of SPH (PSPH), a meshless finite mass (MFM) scheme, as well as an Eulerian code with adaptive mesh refinement.
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Mergers and Mass Accretion for Infalling Halos Both End Well Outside Cluster Virial Radii
Peter Behroozi,Peter Behroozi,Risa H. Wechsler,Yu Lu,Oliver Hahn,Michael T. Busha,Michael T. Busha,Anatoly Klypin,Joel R. Primack +8 more
TL;DR: In this paper, it was shown that infalling dark matter halos (i.e., the progenitors of satellite halos) begin losing mass well outside the virial radius of their eventual host halos.
Journal ArticleDOI
Rhapsody. II. Subhalo Properties and the Impact of Tidal Stripping From a Statistical Sample of Cluster-Size Halos
Hao-Yi Wu,Oliver Hahn,Risa H. Wechsler,Risa H. Wechsler,Peter Behroozi,Peter Behroozi,Yao-Yuan Mao,Yao-Yuan Mao +7 more
TL;DR: In this article, Wu et al. discuss the properties of subhalos in cluster-size halos, using a high-resolution statistical sample: the Rhapsody simulations introduced in Wu et.