English

Comment on "Excluding Primordial Black Holes as Dark Matter Based on Solar System Ephemeris"

High Energy Physics - Phenomenology 2024-09-04 v1 Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

Abstract

It was recently claimed (arXiv:2408.10799) that solar system ephemeris data can exclude primordial black hole (PBH) dark matter in the mass range 101810^{18}-102210^{22}\,g. We show that this conclusion is based on an implausible, implicit assumption; namely the uncertainty on the solar system mass within 50 au is as small as the uncertainty on the mass of the sun. Correcting for this error, we find that ephemeris data can only constrain PBH's with mass below 101610^{16}\,g, which is already excluded by constraints on their evaporation via Hawking radiation. Correcting a further error concerning the time-averaged rate of such fluctuations nullifies even this weaker constraint.

Keywords

Cite

@article{arxiv.2409.01993,
  title  = {Comment on "Excluding Primordial Black Holes as Dark Matter Based on Solar System Ephemeris"},
  author = {James M. Cline},
  journal= {arXiv preprint arXiv:2409.01993},
  year   = {2024}
}

Comments

1 page. Comment on arXiv:2408.10799. Accepted for publication in RNAAS