The Impact of Cosmic Rays on the Kinematics of the Circumgalactic Medium

What are plausible sources of gas pressure in the circumgalactic medium in addition to thermal support?

Led by UW graduate student Iryna Butsky, we found that cosmic-ray pressure can dominate over thermal pressure in the inner 50 kpc of the circumgalactic medium (CGM), creating an overall cooler CGM than that of similar galaxy simulations run without cosmic rays.