Optimizing scientific results of the ACES/PHARAO space mission M/F

id="offer-description" class="ecl-u-type-heading-2 ecl-u-mt-none ecl-u-mb-l">Offer Description Atomic Clock Ensemble in Space (ACES) is a joint ESA/CNES space mission whose main objective is an improved test of the gravitational redshift of clocks as predicted by Einstein's theory of general relativity (GR). The mission consists of a high performance cold-atom clock (called PHARAO and built in France with LTE expertise) onboard the international space station that is compared to ground clocks, thereby testing the prediction of GR at the 10-6 level. This will improve best previous tests using clocks onboard Galileo satellites [Delva 2018] or clocks on the Tokyo Sky-tree [Takamoto 2020] by an order of magnitude or more. ACES was launched on April 21, 2025. It is still being commissioned, but already acquiring science data since October 2021. ACES is expected to enter science phase for a minimum duration of two years in 2026. LTE is strongly involved, from the conception of PHARAO to the detailed analysis of the raw data in order to extract the best possible estimate of the ground-space clock frequency difference and thus to check whether the GR prediction is correct. To do so the space clock is compared to ground clocks using a Microwave Link (MWL) and a pulsed optical link (ELT). At LTE we process the raw data of the MWL and generate science products [Meynadier 2018] from which the scientific results (GR test and other science objectives) can be obtained [Savalle2019, Enzer 20