Connecting the Extremes: A Story of Supermassive Black Holes and Ultralight Dark Matter

Understand

The formation of ultra rare supermassive black holes (SMBHs), with masses of $\mathcal O(10^9\,M_\odot)$, in the first billion years of the Universe remains an open question in astrophysics.

• At the same time, ultralight dark matter (DM) with mass in the vicinity of $\mathcal O(10^{-20}~\text{eV})$ has been motivated by small scale DM distributions.
• Though this type of DM is constrained by various astrophysical considerations, certain observations could be pointing to modest evidence for it.
• We present a model with a confining first order phase transition at $\sim 10$ keV temperatures, facilitating production of $\mathcal O(10^9\,M_\odot)$ primordial SMBHs.