Which galaxy has the largest central black hole measured with strong evidence?
Quick Answer
The galaxy Holm 15A is home to one of the most massive black holes measured directly, estimated at around 40 billion solar masses in some studies. It sits in the Abell 85 cluster.
The Full Story
Holm 15A is notable for hosting one of the most massive black holes ever inferred by stellar dynamics, with some studies estimating about 40 billion solar masses. The galaxy is a giant elliptical in the Abell 85 cluster. Measurements of such extreme black holes are challenging, and different methods can yield different results, but Holm 15A remains a key object in black-hole research. It is especially important because it shows how enormous black holes can grow in the centers of massive galaxies.
Key Facts
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