Comparison of traditional velocity dispersion and pulsar timing methods (left) versus the HiVel ejection from globular clusters method (right) in the search for IMBHs.

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   Fraser Cain (fraser@m.universetoday.com)'s status on Wednesday, 09-Apr-2025 05:06:58 JST Fraser Cain

   Astronomers are searching for intermediate-mass black holes, in between the stellar and supermassive varieties. Recently, a group of researchers announced the discovery of a high-velocity star rocketing out of the globular cluster M15, ejected about 20 million years ago and hurtling at 550 km/s on an escape trajectory from the Milky Way. The astronomers think this could have been caused by a three-body interaction with an intermediate-mass black hole.

   https://www.eurekalert.org/news-releases/1079611