Speaker
Roland Crocker
(Research School of Astronomy and Astrophysics, Australian National University)
Description
I will discuss modelling work we are embarked on that considers injection, transport, energy loss, and radiation of cosmic rays in the low density plasma trapped in dark matter halos surrounding galaxies, galaxy groups, and galaxy clusters. I will show that we can neither blithely ignore the hadronic gamma-ray emission from these particles nor their potential gas dynamical implications. The latter follows from the fact that over a Hubble time, the dark matter halo of an L_star galaxy can accumulate a total energy in ~GeV cosmic rays comparable to the CGM gas binding energy.
Primary author
Roland Crocker
(Research School of Astronomy and Astrophysics, Australian National University)
