Cosmologie

CMB Foreground Studies

Measurements of the Cosmic Microwave Background (CMB) have transformed cosmology into a precision science, and they continue to deliver new insights into the birth and evolution of our Universe. One of the major hurdles in extracting these insights, however, come from "foreground" signals emitted from intervening matter. These spurious emissions can mask and even mimic the primordial CMB, introducing errors into our conclusions.

Pipeline development for next-generation Cosmic Microwave Background observations

The Cosmic Microwave Background (CMB), relic radiation from the hot Big-Bang, carries a wealth of information about physical processes at work in the very early universe, at energies far beyond the reach of man-made particle accelerators. Next generation observatories are poised to further constrain physics beyond the Standard Model of particles and fields, the nature of Dark Matter and Dark Energy, the existence of primordial Gravitational Waves, and the formation of structures. 
 

Antenna coupled Kinetic Inductance Detectors for the observation of the Cosmic Microwave Background polarisation

The study of the cold Universe allows us to go back to the origins of our solar system by observing the embryos of stars, or to the origins of the Universe by measuring the polarisation of the Cosmic Microwave Background (CMB). These sub-millimetre and millimetre instruments require the use of superconducting detectors cooled down to 100mK. Kinetic Inductance Detectors (KIDs) are based on superconducting resonators and are about to replace bolometers thanks to their natural frequency multiplexing and ease of production (in their basic form). 

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