[sém. doct] FASANO Alessandro :A spectro-imager dedicated to the study of the secondary anisotropies of the Cosmic Microwave Background

Thursday 11 Apr 2019, 10:30 → 11:00 Europe/Paris

grand amphi (lpsc)

Mapping millimeter continuum emission of the astronomical sky has become a key issue in modern multi-wavelength astrophysics as such mapping is required to tackle a series of very important questions related to cosmology and galaxy evolution. In particular the spectrum-imaging at low resolution frequency is necessary today for the characterization of the cluster of galaxies. They are studied through the Sunyaev-Zel’dovich effect and used as probes of the large-scale structures and evolution of the universe. In this context, we have built a ground-based spectrum-imager: KISS (KIDs Interfero Spectrometer Survey). The instrument consists on a fast Martin-Puplett interferometer with a double Kinetic Inductance Detectors camera cooled to 150 mK by a Pulse-Tube and a 3He-4He dilution refrigerator. It covers a wide band down to 70 GHz, thanks to the Ti-Al double-layer, and up to 280 GHz, constrained by the chain of the optical filters. KISS is installed at the 2.5 m QUIJOTE telescope at Teide Observatory in Tenerife and it is, at the moment, in commission phase.

Transparents new_2019_04_11_lpsc_seminar.pdf