Axions explain the formation of supermassive black holes at cosmic dawn

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 $m>{10}^{-16}\mathrm{e}\mathrm{V}\mathrm{/}{c}^2$. No additional assumptions are required. Here we answer in detail the most commonly raised questions regarding our work.