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Thursday, 4th March - 3:30pm (Seminar Room, ICRAR Fairway)
Speaker: Dr. Alan Duffy, ICRAR
It is commonly assumed that Dark Matter (DM) completely dominates the baryon component in the formation of large scale structures.
Utilising a series of high resolution cosmological hydro-simulations we have investigated the DM response to the baryons, for various physics schemes including the effect of Active Galactic Nuclei and Supernovae feedback.
We find that the baryons can have a significant impact at all mass scales, ranging from galaxies to clusters. The modification to the predicted DM density profile has important ramifications for both current DM annihilation surveys as well as tests of the favoured cosmological paradigm, Lambda CDM.