Orateur
Description
The CreSZendo proposes conducting the largest and deepest high-resolution (10” at 260 GHz) millimetre survey of the sky, focusing on measuring the Sunyaev-Zeldovich (SZ) effect. Thanks to our team's state-of-the-art Kinetic Inductance Detector (KID) technology, we will construct and install a four-band millimetre wavelength camera at the IRAM 30 m telescope. This camera will have an unprecedented mapping speed, being up to twenty times faster than current instruments.
During the epoch of reionisation (EoR), the bulk motion of electrons imprints on the CMB via the kinetic SZ effect. This provides a means of observing patchy structures induced by the formation of bubbles around the first ionising objects. CreSZendo will be the first to map these structures down to sub-arcminute scales, enabling us to directly probe the mean redshift and duration of the EoR epoch.
Later in the history of the universe, clusters of galaxies form at the intersection of filamentary structures. Hot gas in these clusters and filaments interacts with CMB photons, leading to the thermal (tSZ) effect. CreSZendo will detect thousands of clusters and groups of galaxies, exploring the uncharted territory of low mass and very high redshift, where out-of-equilibrium processes are expected to dominate. Additionally, CreSZendo will map filamentary structures in the cosmic web to directly measure their baryon content and reveal missing baryons by cross-correlating with visible and infrared probes from the Euclid satellite.
CreSZendo will generate a wealth of legacy data, including a robust census of extreme dusty starbursts during the epoch of massive galaxy assembly. This will provide insights in dust obscured growth of structures.