Possibility of Primordial black holes Collision with Earth and the Consequences

TL;DR

This paper investigates the likelihood and potential consequences of primordial black holes colliding with Earth, including heating effects and comparison with asteroid impact risks.

Contribution

It provides a calculation of collision rates and trapped black hole fractions, offering new insights into PBH-Earth interactions and associated hazards.

Findings

Collision rate estimates for PBHs with Earth

Fraction of PBHs trapped inside Earth

Comparison of PBH collision risk with asteroid impacts

Abstract

In the context of the existence of primordial black holes (PBHs), they may compose a fraction of the dark matter of the Universe. Assuming that PBHs fill the dark content of the Milky Way Galaxy in the Galactic halo and dark disk, we calculate the probability of collision of the PBHs with Earth. This collision has different consequences as heating the interior of the earth through dynamical friction and accretion processes. In this work, we calculate the rate of collisions and a fraction of black holes that can be trapped inside the earth. Finally, we compare the danger of PBH collision with the asteroid impacts on Earth.