EUCLID : Dark Universe Probe and Microlensing planet Hunter
2010
There is a remarkable synergy between requirements for
dark energyprobes by cosmic shear measurements and
planethunting by microlensing. Employing weak and
strong gravitational lensingto trace and detect the distribution of matter on cosmic and galactic scales, but as well as to the very small scales of
exoplanetsis a unique meeting point from cosmology to
exoplanets. It will use gravity as the tool to explore the full range of masses not accessible by any other means. EUCLID is a 1.2 m telescope with optical and IR wide field imagers and slitless spectroscopy, proposed to ESA
Cosmic Visionto probe for
dark energy,
baryonic acoustic oscillation, galaxy evolution, and an
exoplanethunt via microlensing. A three-month microlensing program will already efficiently probe for
planetsdown to the mass of Mars at the
snow line, for free floating terrestrial or gaseous
planetsand habitable
super-Earth. A 12+ month survey would give a census on habitable Earth
planetsaround solar like stars. This is the perfect complement to the statistics that will be provided by the
KEPLERsatellite, and these missions combined will provide a full census of extrasolar
planetsfrom hot, warm, habitable, frozen to free floating.
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