Close encounters of the primordial kind: a new observable for primordial black holes as dark matter

Abstract

Primordial black holes (PBHs) remain a viable dark matter candidate in the asteroid-mass range. We point out that in this scenario, the PBH abundance would be large enough for at least one object to cross through the inner Solar System per decade. Since Solar System ephemerides are modeled and measured to extremely high precision, such close encounters could produce detectable perturbations to orbital trajectories with characteristic features. We evaluate this possibility with a suite of simple Solar System simulations, and we argue that the abundance of asteroid-mass PBHs can plausibly be probed by existing and near-future data.

Updated to match version which is scheduled to appear in Phys. Rev. D. 14 pages, 5 figures

References in corpus (11)

• Primordial Black Holes as Dark Matter: Recent Developments
• Pulsar Timing Probes of Primordial Black Holes and Subhalos
• Evidence that 1I/2017 U1 (`Oumuamua) was composed of molecular hydrogen ice
• Testing Theories of Gravity with Planetary Ephemerides
• Constraining Primordial Black Hole Fraction at the Galactic Centre using radio observational data
• Primordial black holes with mass $10^{16}-10^{17}$ g and reionization of the Universe
• On the Anomalous Acceleration of 1I/2017 U1 `Oumuamua
• On the long-term stability of the Solar System in the presence of weak perturbations from stellar flybys
• Timescales of Chaos in the Inner Solar System: Lyapunov Spectrum and Quasi-integrals of Motion
• When Leaving the Solar System: Dark Matter Makes a Difference
• Long-term instability of the inner Solar System: numerical experiments

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