Probing Primordial Black Holes and Dark Matter Clumps in the Solar System with Gravimeter and GNSS Networks
arxiv(2024)
摘要
We show that Global Navigation Satellite Systems (GNSS) and gravimeters on
Earth and in space can potentially offer the most accurate direct measurement
of local density of near-Earth asteroid-mass Primordial Black Holes (PBHs) and
Dark Matter (DM) clumps in the solar system by means of gravitational
influence. Using semi-analytical methods and Monte Carlo simulation, this paper
revisits the analysis of the trajectories of DM clumps in the solar system,
including both captured objects and hyperbolic trajectories. A link is thus
made between the frequency and distance of Earth overflights for a given mass
flux, and a direct measure of dark matter clump density in the solar system. We
then model the signature of a close flyby of a DM object on orbital data from
GNSS satellites and gravity measurements from gravimeters. We thus obtain a
first assessment of the single probe sensitivity. It paves the way for an
exhaustive statistical analysis of 28 years of gravimeters and GNSS data to
obtain observational constraints on the density of the PBHs and DM clumps
within the solar system, for the mass range [10^8-10^17] kg. In addition,
our methodology offers a possibility of direct detection in cases where DM
clumps are endowed with an additional long-range clump-matter fifth-force
beyond gravity.
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