6 citations · 13 across the 7 of their papers we have counts for
7 papers
The Effects of Cosmic Ray Protons on Galactic Nonthermal Filaments
Mohan Richter-Addo, Roark Habegger, Ellen Zweibel +2
The Galactic Center (GC) contains a collection of filaments that are typically tens of parsecs in length, illuminated by synchrotron radiation from cosmic rays (CR). The origin of…
The Impact of Cosmic Ray Transport on the -Ray Luminosity of Diffuse Gas
Roark Habegger, Mateusz Ruszkowski, Ellen G. Zweibel
Observations of -rays from diffuse gas provide the opportunity to study the distribution of high energy particles in different astrophysical environments. In the circumgalactic…
A Co-Scaling Grid for Athena++ II: Magnetohydrodynamics
Fabian Heitsch, Roark Habegger
We extend the co-scaling formalism of Habegger & Heitsch (2021) implemented in Athena++ to magneto-hydrodynamics. The formalism relies on flow symmetries in astrophysical problems…
Cosmic-Ray Feedback from Supernovae in a Parker-Unstable Medium
Roark Habegger, Ellen G. Zweibel
Supernova energy drives interstellar medium (ISM) turbulence and can help launch galactic winds. What difference does it make if of the energy is initially deposited into co…
Cosmic Ray Feedback on Bi-stable ISM Turbulence
Roark Habegger, Ka Wai Ho, Ka Ho Yuen +1
While cosmic rays are well coupled to a galaxy's interstellar medium (ISM) at scales of , adjusting stratification and driving outf…
The Impact of Cosmic Ray Injection on Magnetic Flux Tubes in a Galactic Disk
Roark Habegger, Ellen G. Zweibel, Sherry Wong
In galactic disks, the Parker instability results when non-thermal pressure support exceeds a certain threshold. The non-thermal pressures considered in the Parker instability are…
A Co-Scaling Grid for Athena++
Roark Habegger, Fabian Heitsch
We present a co-scaling grid formalism and its implementation in the magnetohydrodynamics code Athena++. The formalism relies on flow symmetries in astrophysical problems involving…