120 citations · 432 across the 7 of their papers we have counts for
7 papers
Cosmic Ray Acceleration of Cool Clouds in the Circumgalactic Medium
Joshua Wiener, Ellen G. Zweibel, Mateusz Ruszkowski
We investigate a mechanism for accelerating cool (10 K) clouds in the circumgalactic medium (CGM) with cosmic rays (CRs), possibly explaining some characteristics of observed h…
Constraints on Cosmic Ray Transport in Galaxy Clusters from Radio and Gamma Ray Observations
Joshua Wiener, Ellen G. Zweibel
The nature of cosmic rays (CRs) and cosmic ray transport in galaxy clusters is probed by a number of observations. Radio observations reveal the synchrotron radiation of cosmic ray…
High Effects on Cosmic Ray Streaming in Galaxy Clusters
Joshua Wiener, Ellen G. Zweibel, S. Peng Oh
Diffuse, extended radio emission in galaxy clusters, commonly referred to as radio halos, indicate the presence of high energy cosmic ray (CR) electrons and cluster-wide magnetic f…
Interaction of Cosmic Rays with Cold Clouds in Galactic Halos
Joshua Wiener, S. Peng Oh, Ellen G. Zweibel
We investigate the effects of cosmic ray (CR) dynamics on cold, dense clouds embedded in a hot, tenuous galactic halo. If the magnetic field does not increase too much inside the c…
Cosmic ray-driven galactic winds: streaming or diffusion?
Joshua Wiener, Christoph Pfrommer, S. Peng Oh
Cosmic rays (CRs) have recently re-emerged as attractive candidates for mediating feedback in galaxies because of their long cooling timescales. They can have energy densities comp…
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…