Ask Astro: Do supermassive black holes create bars in galaxies?

Do barred galaxies have two or more supermassive black holes in the central region? Can a single black hole in the center create a bar? Nicolas Andreyev Estes Park, Colorado Barred spiral galaxies are fairly common throughout the universe — at least one-third to one-half of spiral galaxies show some kind of central bar structure, including our own Milky Way. Because bars form in the centers of galaxies, which is also where supermassive black holes reside, it’s easy to think the

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