<< Astronomers have found the best evidence for the perpetrator of a cosmic homicide: a black hole of an elusive class known as "intermediate-mass," which betrayed its existence by tearing apart a wayward star that passed too close. >>
<< These so-called intermediate-mass black holes (..) are a long-sought "missing link" in black hole evolution. >>
Claire Andreoli. Hubble finds best evidence for elusive mid-sized black hole. NASA's Goddard Space Flight Center. Mar 31, 2020
https://m.phys.org/news/2020-03-hubble-evidence-elusive-mid-sized-black.html
Dacheng Lin, Jay Strader, et al. Multiwavelength Follow-up of the Hyperluminous Intermediate-mass Black Hole Candidate 3XMM J215022.4−055108. ApJL 892 L25. Mar 31, 2020
https://iopscience.iop.org/article/10.3847/2041-8213/ab745b
