Speaker
Description
Because it does not require the flux measurement of the lens, the microlensing technic is sensitive to a wide rage of dark range, from stellar mass black hole to the free-floating regime. Starting in 2027, it is expected that the Roman mission will detect thousands of free-floating planets. This will allow a first estimate of the population of these objects in the Milky Way. However, several challenges exist. First, the mass and distance of these objects will be difficult to estimate with Roman only. I will present first how the joint survey of Euclid and Roman will allow the detection of the microlensing parallax, that will directly constraint their masses. Similarly, I will also show how this joint survey will eliminate a large range of false positive. Finally, I will discuss how the Euclid Galactic Bulge Survey achieved in 2025 could help to eliminate bounds planets at large orbits.
