Dokumentdetails
ID
oai:arXiv.org:2403.17890
Thema
Astrophysics - Cosmology and Nonga... General Relativity and Quantum Cos... High Energy Physics - Phenomenolog... Physics - Atomic Physics 83C56 (Primary) 81V45 (Secondary)Autor
Bertrand, Bruno Defraigne, Pascale Hees, Aurélien Sheremet, Alexandra Courde, Clément Chabé, Julien Ventura-Traveset, Javier Dilssner, Florian Schoenemann, Erik Mendes, Luis Delva, PacômeKategorie
Wissenschaften: Astrophysik
Jahr
2024
Auflistungsdatum
03.04.2024
Schlüsselwörter
constants objects fundamental dm clocks matter transientZusammenfassung
This study presents bounds on transient variations of fundamental constants, with typical timescales ranging from minutes to months, using clocks in space.
The underlying phenomenology describing such transient variations relies on models for Dark Matter (DM) which suggest possible encounters of macroscopic compact objects with the Earth, due to the motion of the solar system in the galactic halo.
If such compact objects possess an effective feeble interaction with the ordinary matter beyond the gravitational one, it may result in effective transient variations of fundamental constants.
Such variations leave signatures on clocks onboard GNSS satellites.
In this paper, we introduce a phenomenological study dedicated to the search for such DM transient objects using the network of passive hydrogen masers (H-Masers) onboard Galileo satellites.
We first model the signature of transient variations of fundamental constants as a frequency modulation in the difference between two satellite clocks, considering the satellite trajectories relative to the transient event.
Then, we present first results based on a fast analysis method, the maximum reach analysis.
The main result is a significant extension of the discovery range for DM transients, with a sensitivity never achieved before.
We investigate indeed the range of transient sizes from $10^5$ to $10^9$ kilometres, which, apart from indirect and model-dependent non-transient effects, has never been explored previously.
;Comment: 13 pages, 11 figures, version accepted for publication in Advances in Space Research
Bertrand, Bruno,Defraigne, Pascale,Hees, Aurélien,Sheremet, Alexandra,Courde, Clément,Chabé, Julien,Ventura-Traveset, Javier,Dilssner, Florian,Schoenemann, Erik,Mendes, Luis,Delva, Pacôme, 2024, Searching for large dark matter clumps using the Galileo Satnav clock variations
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