Are all massive black holes located at galactic centers?

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Jim Leff
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Are all massive black holes located at galactic centers?

Postby Jim Leff » Thu Feb 25, 2016 12:18 am

Are all massive black holes located at galactic centers?

Hard to imagine how one wouldn't be, unless it had absorbed an entire galaxy of stars, and my understanding is that the universe is not old enough for that to have happened anywhere.

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Chris Peterson
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Re: Are all massive black holes located at galactic centers?

Postby Chris Peterson » Thu Feb 25, 2016 12:31 am

Jim Leff wrote:Are all massive black holes located at galactic centers?

Hard to imagine how one wouldn't be, unless it had absorbed an entire galaxy of stars, and my understanding is that the universe is not old enough for that to have happened anywhere.

Simple answer: yes. Somewhat deeper answer: all supermassive black holes probably formed in the center of galaxies, but a small percentage may no longer be there. We have at least one example of a supermassive black hole being ejected from its parent galaxy. So it's likely that there are more.
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Jim Leff
Science Officer
Posts: 130
Joined: Thu Dec 09, 2010 2:00 pm

Re: Are all massive black holes located at galactic centers?

Postby Jim Leff » Thu Feb 25, 2016 12:37 am

Thanks. Great link....I wonder if the LIGO guys are going to study that ejection case.

Hey, FWIW, I just did a quick google search of the issue, and found this breaking news: Twin black holes from gravitational wave discovery may have been born from a single star


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