MG14 - Talk detail

Back to previous page

 Participant

Institution

Session

Accepted

Order

Time

Talk

Title

Abstract

During this talk, I'll give an overview of Euclid, an ESA mission to study dark mater and dark energy distribution foreseen to be launched in 2020. Euclid is optimised for two primary cosmological probes: - Weak Gravitational Lensing, a method to map the dark matter and measure dark energy by measuring the distortions of galaxy images by mass inhomogeneities along the line-of-sight. - Baryonic Acoustic Oscillations, wiggle patterns imprinted in the clustering of galaxies, which provide a standard ruler to measure dark energy and the expansion in the Universe. Euclid will cover 15000 square degree of the sky with unprecedented precision during it's 6 years lifetime. It will be able to detect about 2 billion galaxies and to get spectroscopic measurements for 70 millions of them. This is achieved using 2 instruments: - VIS, a single wide-band visible imager with 36 CCDs each of 16 million pixels covering an area of about 0.5 deg^2, an angular resolution of 0.2 arcsec and a sensitivity of 24.5 magnitudes (10 sigma) per exposure; - NISP, a spectro-photometer NIR instrument with 16 detectors each of 4 million pixels covering the same 0.5 deg^2 field of view of VIS, capable of detecting sources in 3 NIR bands (Y, J and H) and to execute slit-less spectroscopy in the same wavelength range with a resolving power up to 500. Euclid will also pose new benchmarks in terms of on-board data-rate generation, calibration requirements and data analysis to achieve its primary scientific goals

Pdf file

Back to previous page