Wednesday 16 January, 2:30 pm, Curia II
The Sunyaev Zel'dovich (SZ) effect is an unbiased probe of ionized baryons, the majority of which are likely hiding in the intergalactic medium and elude direct observation. We build analytical models to understand the statistics of the SZ effect, devolop methods to analyze observation data and run simulations to test our predictions.
Our 5123 moving mesh hydro code LCDM simulation shows a flat SZ power spectrum for l between 3000 and 10000 with a large temperature fluctuation around 25 uk at these scales. These results suggest the sensitivity of the SZ effect to the state of baryons such as the non-gravitational heating.
We then apply our simulated SZ maps to the CMB interferometer : Array for MIcrowave Background Anisotropy (AMIBA) to test the optimal survey strategies to measure the SZ power spectrum and cluster searching. We find that AMIBA can measure the SZ power spectrum in the range of multipole l between 2000 and 5000 to 20% accuracy, the SZ-galaxy correlatin to 30% accuracy and find 1 cluster every 4 hour. With these data and our theoretical understanding, we can constrain the state of missing baryons.