Axions explain the formation of supermassive black holes at cosmic dawn

Abstract

In a recent paper we pointed out that supermassive black holes, with masses ranging from $10^5$ to $10^{10}{M}_{\odot }$ form naturally at cosmic dawn if the dark matter is QCD axions or axion-like particles with mass $m>10^{-16}\mathrm{eV}/c^2$. No additional assumptions are required. Here we answer in detail the most commonly raised questions regarding our work.

Contribution to the Proceedings of the COSMIC WISPers meeting (CA21106) in Sofia, Bulgaria, on September 9-12, 2025