Speaker
Description
In this talk, I will introduce the Resolved Cluster Evolution Sunyaev-Zeldovich Survey (ReCESS): a 200-hour-plus observing campaign aimed at resolving the intracluster medium (ICM) through the thermal Sunyaev-Zeldovich (tSZ) effect in 25 ACT-selected galaxy clusters within a redshift range of $1.2 < z < 2$ using MUSTANG-2 on the GBT and ALMA. I will present the first results on the average tSZ-derived pressure distribution of the ICM at $z > 1.2$, mapped from the core (inner $\approx80$ kpc) to the virial radius, by combining high-resolution data with ACT observations. Whenever available, we incorporate X-ray observations into our forward modeling routine to obtain a full thermodynamic picture of the ICM. I will illustrate this method through a case study of a cluster at $z = 1.7$, for which excellent XMM-Newton, Chandra, and ALMA data are available. Finally, ReCESS enables the search for and study of shocks, mergers, and feedback mechanisms at an epoch when the ICM is still forming. While not all observations have been completed, we have identified several extremely interesting clusters with unique ICM morphologies, including the detection of a “tSZ cavity” at $z = 1.3$—only the second tSZ cavity ever detected.
| Would you be interested in presenting a poster if the conference is oversubcribed? | No |
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