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The Host Halos of OI Absorbers in the Reionization Epoch
K. Finlator, J. A. Muñoz, B. D. Oppenheimer +3
We use a radiation hydrodynamic simulation of the hydrogen reionization epoch to study OI absorbers at z~6. The intergalactic medium (IGM) is reionized before it is enriched, hence…
Cosmic Ray Streaming in Clusters of Galaxies
Joshua Wiener, S Peng Oh, Fulai Guo
The observed bimodality in radio luminosity in galaxy clusters is puzzling. We investigate the possibility that cosmic-ray (CR) streaming in the intra-cluster medium can 'switch of…
Cosmic Ray Heating of the Warm Ionized Medium
Joshua Wiener, Ellen G. Zweibel, S. Peng Oh
Observations of line ratios in the Milky Way's warm ionized medium (WIM) suggest that photoionization is not the only heating mechanism present. For the additional heating to expla…
Giant radio relics in galaxy clusters: reacceleration of fossil relativistic electrons?
Anders Pinzke, S. Peng Oh, Christoph Pfrommer
Many bright radio relics in the outskirts of galaxy clusters have low inferred Mach numbers, defying expectations from shock acceleration theory and heliospheric observations that…
Chaotic cold accretion onto black holes
M. Gaspari, M. Ruszkowski, S. Peng Oh
Using 3D AMR simulations, linking the 50 kpc to the sub-pc scales over the course of 40 Myr, we systematically relax the classic Bondi assumptions in a typical galaxy hosting a SMB…