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000005550 005__ 20220111104829.0
000005550 0247_ $$2DOI$$a10.1109/EFTF/IFCS52194.2021.9604250
000005550 037__ $$aSCART-2022-0014
000005550 100__ $$aBertrand, Bruno
000005550 245__ $$aGAlileo Survey of Transient Objects Network (GASTON) Project: Searching Dark Matter using the Galileo Satellites
000005550 260__ $$c2021
000005550 520__ $$aSome models for Dark Matter (DM) suggest possible encounters with a period τ of macroscopic dark structures with the Earth, implying transient signatures on clocks onboard GNSS satellites. In this paper we first introduce the GASTON project, an original study dedicated to the search for such ‘DM transients’ using the network of passive H-Maser onboard Galileo satellites. This project is based on a 3-months measurements campaign carried out in the early 2021 where precise satellite clock measurements are supplemented by an intensive laser ranging (SLR) campaign on Galileo satellites. Then, we present preliminary results based on single satellite frequency jumps between consecutive 30s epochs over the 3 months campaign. In particular, we already bring strong constraints on the parameter space for transient DM objects from 10^5 to 10^9 km, a region which was never explored previously with GNSS clocks.
000005550 536__ $$aH2020-ESA-038.10/$$cGASTON/$$fGASTON
000005550 594__ $$aNO
000005550 6531_ $$aGlobal navigation satellite system
000005550 6531_ $$aGNSS
000005550 6531_ $$aTime-frequency analysis
000005550 6531_ $$aDark Matter
000005550 700__ $$aDefraigne, Pascale
000005550 700__ $$aSheremet, Alexandra
000005550 700__ $$aHees, Aurélien
000005550 700__ $$aWolf, Peter
000005550 700__ $$aDelva, Pacôme
000005550 700__ $$aChabé, Julien
000005550 700__ $$aCourde, Clément
000005550 700__ $$aMendes, Luis
000005550 700__ $$aVentura-Traveset, Javier
000005550 700__ $$aDilssner, Florian
000005550 700__ $$aSchoenemann, Erik
000005550 773__ $$pproceedings of the 2021 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)$$y2021
000005550 8560_ $$fbruno.bertrand@observatoire.be
000005550 85642 $$ahttps://ieeexplore.ieee.org/document/9604250
000005550 905__ $$apublished in
000005550 980__ $$aREFERD