Degeneracies between Modified Gravity and Baryonic Physics
  In order to determine the observable signatures of modified gravity theories,
it is important to consider the effect of baryonic physics. We use a modified
version of the ISIS code to run cosmological hydrodynamic simulations to study
degeneracies between modified gravity and radiative hydrodynamical processes.
Of these, one was the standard $\Lambda$CDM model and four were variations of
the Symmetron model. For each model we ran three variations of baryonic
processes: non-radiative hydrodynamics; cooling and star formation; and
cooling, star formation, and supernova feedback. We construct stacked gas
density, temperature, and dark matter density profiles of the halos in the
simulations, and study the differences between them. We find that both
radiative variations of the models show degeneracies between their processes
and at least two of the three parameters defining the Symmetron model.
