Shedding light on the Dark Universe with the ESA Euclid satellite

Titolo: Shedding light on the Dark Universe with the ESA Euclid satellite

Relatori: Nicoletta Mauri (INFN Bologna) and Chiara Sirignano (INFN&UniPd, Padova)

Coordinate: venerdì 17 giugno 2016, ore 11, aula L DFA

Abstract: Objective of EUCLID mission is to map the geometry of the dark Universe by investigating the distance-redshift relationship and the evolution of cosmic structures. The strategy of
the observational survey is the key point for the cosmological aspects, to be performed by a wide sky coverage from the two onboard instruments operating in the Visible (VIS) and Near Infrared (NISP) bands. Euclid measurements of the gravitational weak lensing and galaxy clustering (baryonic acoustic oscillations and redshift space distortions) will challenge the theories of dark energy and gravity.
After the presentation of the above issues, the INFN participation to EUCLID will be discussed. The contribution of INFN groups to the construction of the instrument and to the science goals of the mission will be outlined. Further opportunities will be also discussed. Particular attention will be posed on the NISP instrument, operating as a photometer and spectrometer, and on its components. The architecture of the instrument, expected performances, and technological key challenges will be presented.